The Nextcloud login form is disabled. Use another login option if available or contact your administration.

I have been looking for a way to hide that message, but can't find.

Even better would be if the default /login page could be configured to redirect automatically to the Cloudron OIDC login. Would you know how to do this?

On that point, I am seeing an issue: Despite being an admin account, after the update, under the Accounts preferences, for most accounts on NextCloud I am getting this message: "You do not have permissions to see the details of this account." (For some reason, the admin account and one additional user account, the most recently created one, are editable.) In particular, this means I am unable to add or remove accounts from groups, which is a major problem.

Does anyone have ideas about what could be causing this?

Yes I had the same issue. The problem is, that the other user in question needs to log in once. Otherwise they are all in some weird intermediate state. I used impersonation to do that.

Does anyone have ideas about what could be causing this?

On this and other apps where Cloudron login is required, is there a way to remove the app's native login fields to avoid confusing users?

I'm also not sure what "manual update" consists of

Manual update just means you have to manually click the update button, i.e. it's not going to update automatically accordingly to your update schedule like it normally does.

The main quirks with the transition are:

• you have to tell your users that from now one they have to use the button "Login with Cloudron" to log into Nextcloud, instead of entering their username and password as usual.
• if some have the desktop clients installed they'll get logged out and have to re login.
• if some sync their Nextcloud calendars via CalDAV on their mobile or desktop then they'll have to follow this guide: https://forum.cloudron.io/topic/10067/guide-external-nextcloud-with-openid-social-login-calendar-caldav-synchronization. (I'd say this is quite a drawback of using OIDC with Nextcloud in my opinion).