I’m using Nextcloud on two different servers. The client OS is kubuntu 19.04. The desktop client works perfectly on the connection to the Nextcloud 15 server. Yet, the very same client runs into a “Log in -> Grant Access -> Log in -> Grant Access -> Log in …” Loop against a Nextcloud 16 server.
The Nextcloud 16 server runs fine, i.e. Web Access via https is fluent. It’s just the desktop client fails to overcome the login procedure.
I tried with an application token too, but this totally break the login GUI of the desktop client. All turns to the Window background color and with just 3 widgets somewhere without any text nor image.
I cannot downgrade the server to be 15 again. What should I do?