Issue with Angular app accessing keycloak SSL


1 main keycloak instance (production realm)
1 addon keycloak instance (addon writen by 3rd party)
1 angular app
All in Azure

We have a front door in azure that redirects the traffic when people go to the DNS link and this goes towards the angular app
Admins login towards the angular app wich is linked to keycloak.
This works.
But when we try to add users as an admin we get the following:

SSL required for: EXTERNAL

the keycloack addin is a java 11 backend server. and has a CORS towards the Angular APP
the angular all NODE14 LTS

Both are running a Linux App service.
If anyone could shine a light.