marcoliverhofer glad to hear the mystery was solved!
But your message makes me curious, if you changed the database password for the MySQL user but not in config.php
, Flarum would have stopped working immediately and you would have noticed.
Do you mean you use the same password for the Flarum admin and MySQL access? That's not necessary, in fact it would be more secure to have different passwords.
When you update Flarum with the web GUI, it asks for the MySQL password, not the Flarum admin password.