some providers do not show on the map (but they do on https://qms.nextgis.com/geoservices/... )

[legrostdg]

Some providers (I tried https://qms.nextgis.com/geoservices/1417/ and https://qms.nextgis.com/geoservices/797/ ) do not show on the app but they do on the preview at https://qms.nextgis.com/geoservices/...

I tried to change the zoom level and the "zoom levels to show layer" range to the maximum in the layer settings, but it does not work.

[BishopGIS]

There is some problem with service:

This is qms service description issue. I have wrote to author.

[legrostdg]

Is there a way to spot issues like this in the app? Is it the same problem on the two providers? Note that if you zoom in, there is no issue on the webapp (but it still does not display on the app).