Something strange in one of the Android phones in our household: Google Play is no longer showing updates available - only for some apps, not all of them.

I know because Tile stopped working and when I compared versions with my own smartphone it was way behind. Google Play didn't show an update. I had to uninstall and install it again. The same thing happened today with Life360 - it showed a message saying the version was old - and sure enough a lot older than the one on my own phone and Google Play didn't show an update available. Again, uninstall and install it solved the problem.

Android 7.1 on this device.

Any ideas or suggestions on how to get Google Play going again as it should?