Single app loses all network access

I’m running OS 4.9 on an FP4.

Problems started two weeksa ago when FairEmail suddenly couldn’t access my mailbox account any more. Apparently DNS resolution failed - restarting the phone, switching off App protection etc. didn’t help. Switched to K9 - worked.

Now AntennaPod started acting up - it’s not possible to download any podcast from any server. Again, fiddeling with the app protection settings didn’t help.

Any ideas?

Reinstalling the app fixed the problems. Weird.