Password icons dont load

Hello Community,
I have s small problem. I’m starting to use the password App in Nextcloud. I did see that there is a possibility for icons on the right, but as of right now it always just shows the First Letter of the Name in big. I would love it to have for example the favicons of the linked Website or an icon that I can add manually. Is there a Way of accomplishing that?
Right now I have Netflix and Disney as test Passwords, and it works on neither of them.

Thanks for help

Nextcloud Hub 4(26.0.1)
Password 2023.5.30
PHP 8.1.18
Runs in a Ubuntu Container in Proxmox