OAuth-Account-Creation

Hello everyone,

we started an EDX-Instance using Tutor and are slowly progressing towards getting it ready.
The Platform needs to be publicly accessible, so we dont want anyone to be able to register.
But what we want is out Users being able to Authenticate using Entra id.
The problem is that i did not find a way yet to disable public registering but keep registering after Entra-ID Login possible.
So far i used the basic plugin as seen in the docs, setting
“FEATURES[‘ALLOW_PUBLIC_ACCOUNT_CREATION’] = False”

Also, the URL for the Entra-Login-Button is wrong.
On (EDX-URL)/admin/third_party_auth/oauth2providerconfig/ i added the provider and also put in an svg.
The Login-Page https://app.(EDX-URL)/authn/login does not show the picture.
Which is obvious, since the URL it has for the Picture is https://apps.(EDX-URL)/media/Microsoft_Entra.svg whereas the picture is available with the URL https://(EDX-URL)/media/Microsoft_Entra.svg
We use the basic Caddy that is put up by tutor.

Does anyone know how that can be achieved?
Thank you very much.