I just migrated from Owncloud 8.2 to Nextcloud 9.0.52. Everything else (i.e. the web interface, desktop client) seems to work just fine, but I can’t get the Nextcloud Android app to connect with the server. I can enter the URL (no errors), my login and password, but the ”Connect” button feels totally unresponsive, it does nothing at all no matter how much I tap it. No error messages are given by the app nor is there anything correlating with the attempts in server logs.

This happens on both my phone (Nexus 5X, Android M) and tablet (Samsung Tab 4, Android L). I also tried the Beta app from F-Droid and the issue is present there too. It’s also present in both my WLAN and when using a direct 3G connection on the phone (so I don’t think the WLAN router’s firewall is the cause either).

The Owncloud app on the same devices still works with the server, although I haven’t tried logging out and re-connecting it.

The server is on shared hosting where I have shell access.

Any suggestions?