@rotdrop
Error at the frontend page:
"Registration for Roundcube is not possible. There are login errors."
my own server install: nginx, Debian latest, php 8.4.14, mariaDB - NC install 32.0.1
/var/www/web/apps/mail_roundcube/lib/Service/AuthRoundCube.php:237: OCA\RoundCube\Service\AuthRoundCube::login(): Could not update request token after login.
I tried several settings & checked everything here also with the readme - but nothing helps
All admin & user settings are insert & tested that the especially the credentials are correct - as well the roundcube server path is correct & working.
Thanks in advance for your help & fix that the app is working again in Nextcloud.