diff --git a/.github/ISSUE_TEMPLATE/connection-problem.yml b/.github/ISSUE_TEMPLATE/connection-problem.yml
new file mode 100644
index 0000000..63969ce
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/connection-problem.yml
@@ -0,0 +1,42 @@
+name: Connection problem
+description: Your brush isn't in the list, or it won't connect.
+title: 'Connection problem: '
+labels: ['connection problem']
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Sorry it didn't work. Tell us what you have — knowing which brushes don't connect is the
+        first step to supporting them.
+
+        Tip: most brushes only advertise while awake. Press the power button (or pick the brush up)
+        right before connecting.
+  - type: input
+    id: model
+    attributes:
+      label: Brush model
+      description: As printed on the handle or box.
+      placeholder: Oral-B iO Series 7
+    validations:
+      required: true
+  - type: dropdown
+    id: problem
+    attributes:
+      label: What happened?
+      options:
+        - My brush isn't in the list
+        - It's in the list, but won't connect
+        - It connects, then drops
+    validations:
+      required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: Anything else?
+      description: Did it show up under a different name? Is it paired with the vendor app on another phone?
+  - type: textarea
+    id: environment
+    attributes:
+      label: Environment
+      description: Filled in by the app. Review it before submitting.
+      render: text
diff --git a/.github/ISSUE_TEMPLATE/device-report.yml b/.github/ISSUE_TEMPLATE/device-report.yml
new file mode 100644
index 0000000..2259f08
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/device-report.yml
@@ -0,0 +1,45 @@
+name: Device report
+description: Tell us how your brush works with Brushlog — this is how models get confirmed.
+title: 'Device report: '
+labels: ['device report']
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks! Brushlog is confirmed on the Oral-B iO; older Genius / SmartSeries / Smart brushes
+        are supported from prior art but untested. Your report is how they get confirmed (or fixed).
+
+        If you opened this from the app, the **Connection** box below is already filled in with
+        your brush's model identifiers and Bluetooth layout — no brushing data. If we need more to
+        fix something, we'll ask for the in-app Diagnostics report in the thread.
+  - type: input
+    id: model
+    attributes:
+      label: Brush model
+      description: As printed on the handle or box.
+      placeholder: Oral-B iO Series 7
+    validations:
+      required: true
+  - type: dropdown
+    id: works
+    attributes:
+      label: Does it work?
+      multiple: true
+      options:
+        - Live view works (timer, mode, pressure)
+        - History sync works
+        - Brush-head wear shows up
+        - Something is wrong (tell us below)
+    validations:
+      required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: What did you see?
+      description: Anything missing, wrong or odd — e.g. a mode shown under the wrong name.
+  - type: textarea
+    id: connection
+    attributes:
+      label: Connection
+      description: Filled in by the app. Review it before submitting.
+      render: text
diff --git a/README.md b/README.md
index 1f6f9d7..0dd160f 100644
--- a/README.md
+++ b/README.md
@@ -102,6 +102,13 @@ brush-head wear. Older **Genius / SmartSeries / Smart** lines are covered from p
 but not tested here. The client feature-detects every characteristic, so an unknown model
 connects and exposes whatever it supports — the in-app Diagnostics panel shows what that is.
 
+Have a brush other than an iO? When it connects, Brushlog asks how it went and opens a
+pre-filled [device report](https://github.com/libreble/brushlog/issues/new?template=device-report.yml)
+— model identifiers and Bluetooth layout, no brushing data. If your brush isn't in the list or
+won't connect, dismissing the chooser offers a
+[connection-problem report](https://github.com/libreble/brushlog/issues/new?template=connection-problem.yml).
+Nothing is sent from the app; you review and submit the issue on GitHub.
+
 ## Privacy
 
 No network calls, no analytics, no accounts. Your data lives in this browser only; export it to
diff --git a/src/App.tsx b/src/App.tsx
index d6dcb6c..33a622e 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -9,6 +9,7 @@ import type { StoredSession } from './lib/session.ts';
 import { ConnectBar } from './components/ConnectBar.tsx';
 import { LiveSession } from './components/LiveSession.tsx';
 import { DiagnosticsPanel } from './components/DiagnosticsPanel.tsx';
+import { ReportToast } from './components/ReportToast.tsx';
 import { StatGrid } from './components/StatGrid.tsx';
 import { TrendChart } from './components/TrendChart.tsx';
 import { Insights } from './components/Insights.tsx';
@@ -104,6 +105,15 @@ export default function App() {
         </div>
       )}
 
+      <ReportToast
+        state={brush.state}
+        cancelled={brush.cancelled}
+        error={brush.error}
+        device={brush.device}
+        discovery={brush.discovery}
+        raised={savedToast !== null}
+      />
+
       {selected && (
         <SessionDetail session={selected} onClose={() => setSelected(null)} goalDurationS={goalDurationS} />
       )}
diff --git a/src/components/ReportToast.tsx b/src/components/ReportToast.tsx
new file mode 100644
index 0000000..bf6044e
--- /dev/null
+++ b/src/components/ReportToast.tsx
@@ -0,0 +1,103 @@
+import { useEffect, useState } from 'react';
+import type { ConnState } from '../hooks/useBrush.ts';
+import type { DeviceInfo, DiscoveredService } from '../protocol/types.ts';
+import { connectionProblemUrl, deviceReportUrl, isConfirmedModel } from '../lib/report.ts';
+
+interface Props {
+  state: ConnState;
+  cancelled: boolean;
+  error: string | null;
+  device: DeviceInfo | null;
+  discovery: DiscoveredService[] | null;
+  /** Lift above the bottom-centre "session saved" toast while that's showing. */
+  raised: boolean;
+}
+
+const doneKey = (d: DeviceInfo) => `brushlog.reportDone.${d.modelId}-${d.protocolVersion ?? 'x'}`;
+
+function isDone(d: DeviceInfo): boolean {
+  try {
+    return localStorage.getItem(doneKey(d)) !== null;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * A dismissible, non-blocking toast inviting a device report (see lib/report.ts):
+ *  - a brush that isn't an iO connected → "does it work?", once per model (dismiss or report);
+ *  - the chooser was dismissed or connecting failed → "not in the list, or won't connect?",
+ *    hidden on dismiss until the next cancel/failure.
+ * Both open a pre-filled GitHub issue form; the user reviews and submits it there.
+ */
+export function ReportToast({ state, cancelled, error, device, discovery, raised }: Props) {
+  const [doneNow, setDoneNow] = useState(false);
+  const [problemDismissed, setProblemDismissed] = useState(false);
+  const problem = cancelled || state === 'error';
+
+  useEffect(() => {
+    if (!problem) setProblemDismissed(false);
+  }, [problem]);
+
+  // Wait for discovery so the report carries the GATT layout.
+  const ask =
+    state === 'connected' && device && discovery && !isConfirmedModel(device) && !doneNow && !isDone(device);
+
+  if (ask) {
+    const finish = () => {
+      try {
+        localStorage.setItem(doneKey(device), '1');
+      } catch { /* storage unavailable — it may ask again next time */ }
+      setDoneNow(true);
+    };
+    return (
+      <Toast raised={raised} onDismiss={finish}>
+        <p>Brushlog is only confirmed on the Oral-B iO so far. Does your brush work?</p>
+        <a href={deviceReportUrl(device, discovery)} target="_blank" rel="noopener noreferrer" onClick={finish} className={ACTION}>
+          Tell us how it went
+        </a>
+      </Toast>
+    );
+  }
+
+  if (problem && !problemDismissed && state !== 'connected') {
+    return (
+      <Toast raised={raised} onDismiss={() => setProblemDismissed(true)}>
+        <p>Brush not in the list, or won't connect?</p>
+        <a
+          href={connectionProblemUrl(error)}
+          target="_blank"
+          rel="noopener noreferrer"
+          onClick={() => setProblemDismissed(true)}
+          className={ACTION}
+        >
+          Tell us which one
+        </a>
+      </Toast>
+    );
+  }
+
+  return null;
+}
+
+const ACTION = 'mt-2 inline-block rounded-lg bg-btn px-3 py-1.5 text-sm font-medium text-on-btn hover:bg-btn-hover';
+
+function Toast({ children, raised, onDismiss }: { children: React.ReactNode; raised: boolean; onDismiss: () => void }) {
+  return (
+    <div
+      role="status"
+      className={`fixed inset-x-4 z-20 ml-auto max-w-sm rounded-2xl border border-line bg-surface p-4 pr-10 text-sm text-fg-secondary shadow-lg transition-[bottom] ${raised ? 'bottom-20' : 'bottom-4'}`}
+    >
+      {children}
+      <button
+        type="button"
+        onClick={onDismiss}
+        aria-label="Dismiss"
+        title="Dismiss"
+        className="absolute right-2 top-2 flex h-7 w-7 items-center justify-center rounded-lg text-fg-muted hover:bg-surface-hover hover:text-fg"
+      >
+        <span aria-hidden>✕</span>
+      </button>
+    </div>
+  );
+}
diff --git a/src/hooks/useBrush.ts b/src/hooks/useBrush.ts
index b36ed1f..747b0ab 100644
--- a/src/hooks/useBrush.ts
+++ b/src/hooks/useBrush.ts
@@ -40,6 +40,8 @@ export function useBrush({ onSync, lastSyncedTimestamp }: UseBrushOptions) {
   const [live, setLive] = useState<LiveState | null>(null);
   const [device, setDevice] = useState<DeviceInfo | null>(null);
   const [error, setError] = useState<string | null>(null);
+  /** The last manual connect ended with the chooser dismissed — offer a connection-problem report. */
+  const [cancelled, setCancelled] = useState(false);
   const [syncing, setSyncing] = useState(false);
   const [syncProgress, setSyncProgress] = useState(0);
   const [discovery, setDiscovery] = useState<DiscoveredService[] | null>(null);
@@ -128,6 +130,7 @@ export function useBrush({ onSync, lastSyncedTimestamp }: UseBrushOptions) {
     if (state === 'unsupported' || state === 'insecure') return;
     pausedRef.current = false; // a manual connect re-enables auto-reconnect
     setError(null);
+    setCancelled(false);
     setState('connecting');
     setRawLog([]);
     try {
@@ -139,6 +142,7 @@ export function useBrush({ onSync, lastSyncedTimestamp }: UseBrushOptions) {
       const msg = e instanceof Error ? e.message : String(e);
       if (e instanceof DOMException && e.name === 'NotFoundError') {
         setState('idle');
+        setCancelled(true);
       } else {
         setError(msg);
         setState('error');
@@ -198,5 +202,5 @@ export function useBrush({ onSync, lastSyncedTimestamp }: UseBrushOptions) {
 
   useEffect(() => cleanup, [cleanup]);
 
-  return { state, live, device, error, syncing, syncProgress, discovery, rawLog, connect, disconnect, sync };
+  return { state, live, device, error, cancelled, syncing, syncProgress, discovery, rawLog, connect, disconnect, sync };
 }
diff --git a/src/lib/report.ts b/src/lib/report.ts
new file mode 100644
index 0000000..8d73bb2
--- /dev/null
+++ b/src/lib/report.ts
@@ -0,0 +1,52 @@
+// Device reports: pre-filled GitHub issue forms (.github/ISSUE_TEMPLATE/) the user reviews and
+// submits themselves. Nothing is sent from the app — it only opens a URL. The summary carries
+// model identifiers and the GATT layout, never brushing data, characteristic values or raw
+// frames (we ask for a Diagnostics report in the thread if we need one).
+
+import type { DeviceInfo, DiscoveredService } from '../protocol/types.ts';
+
+const ISSUES = 'https://github.com/libreble/brushlog/issues/new';
+
+/** The iO (protocol V007) is the one line confirmed on hardware; everything else is prior art. */
+export function isConfirmedModel(device: DeviceInfo | null): boolean {
+  return device?.protocolVersion === 7;
+}
+
+function browser(): string {
+  return typeof navigator === 'undefined' ? 'unknown' : navigator.userAgent;
+}
+
+function issueUrl(template: string, title: string, fields: Record<string, string>): string {
+  return `${ISSUES}?${new URLSearchParams({ template, title, ...fields })}`;
+}
+
+export function connectedSummary(device: DeviceInfo | null, discovery: DiscoveredService[] | null): string {
+  const lines = [
+    'app: Brushlog',
+    `browser: ${browser()}`,
+    `advertised name: ${device?.name ?? 'unknown'}`,
+    `model id: ${device?.modelId ?? '?'} · protocol: ${device?.protocolVersion ?? '?'} · firmware: ${device?.firmwareVersion ?? '?'}`,
+  ];
+  if (discovery) {
+    lines.push('services:');
+    for (const s of discovery) {
+      lines.push(`  ${s.uuid}${s.known ? ' [known]' : ''}`);
+      for (const c of s.characteristics) lines.push(`    ${c.uuid} [${c.properties.join(',')}]`);
+    }
+  }
+  return lines.join('\n');
+}
+
+/** Issue form for a brush that connected: does it work? */
+export function deviceReportUrl(device: DeviceInfo | null, discovery: DiscoveredService[] | null): string {
+  return issueUrl('device-report.yml', `Device report: ${device?.name ?? 'my brush'}`, {
+    connection: connectedSummary(device, discovery),
+  });
+}
+
+/** Issue form for a brush that isn't in the chooser or won't connect. */
+export function connectionProblemUrl(error: string | null): string {
+  const lines = ['app: Brushlog', `browser: ${browser()}`];
+  if (error) lines.push(`error: ${error}`);
+  return issueUrl('connection-problem.yml', 'Connection problem: ', { environment: lines.join('\n') });
+}