AWS + Forge not working in some regions?

I am trying to create a new server in region Stockholm on AWS. I have no problem doing that in Frankfurt, however, as a swede Stockholm is a more logical region.

I tried do it in Virginia as well but that did not work. And I created new credentials to see if that was the problem, but since IAM-credentials are global this should not be he issue, right?

Anyone else with the same problem?