I found the issue to the problem. For testing purposes we added a security group to the environment. This means that ONLY users that are part of that group can have access to the environment. It is not possible to manually add users that are not members of the security group.
Note that it is not possible to remove security groups from a powerapps environment either (yet..?)
//Johan
WarrenBelz
791
Most Valuable Professional
MS.Ragavendar
410
Super User 2025 Season 2
mmbr1606
275
Super User 2025 Season 2