What function does it serve that i need to add my Cloudron server in the settings and why does it go via the ip?

Firewall / Proxy. We do not use third-party hubs like Docker Hub. It is our own infrastructure, and we want to get an overview of the (technical) possibilities between accounts/instances and our resources. Besides that, some apps are in a premium tier for which we charge maintenance fees. This workflow is integrated directly into the app catalog.

When installing two apps I am getting and error that it cannot pull from the registry:

Thanks a lot for pointing out this error. That wasn't intentional. I'm opening a ticket for our devs right away (yep: real humans, not AI).

It's worth mentioning: the entire app catalog is still in early beta.

I see you are using Laravel.

Yes.

What function does it serve that i need to add my Cloudron server in the settings and why does it go via the ip?

When installing two apps I am getting and error that it cannot pull from the registry:

Jun 02 21:14:30 tasks: setCompleted - 23938: {"result":null,"error":{"message":"Unable to pull image apps.safeserver.de/de.safeserver.openslides.cloudron:1.0.0. Please check the network or if the image needs authentication. statusCode: 401","reason":"Docker Error"},"percent":100}

Create and manage Sanctum personal access tokens.

I see you are using Laravel.