Hello everyone

After a total of 21 hours and 2 IBOS tablets, I still haven't completely got it working. And I've been desperate for the last 18 hours.

1 PHP 8.4
2 Both Joomla 5.4.3
3 Main domain and one subdomain
4 Hosting provider is afahosting.de
5 MySQL 8.0
6 phpMyAdmin version: 8.0.28
7 Both ...