Similar issue has been submited before(ICM: 248672937) that you can try the workaround provided by PG team:
The ACM connector uses the default organization directory when logging in. in the case that the customer's default directory is different than the one where the billing scope belong to, they will get this error message.
To resolve, here are the steps to manually specify the directory where the billing scope belongs to:
Prerequisites: make sure you clear all existing permissions. this should be empty before following the steps
Step 6: Enter Domain name for the organization where the billing scope belongs to
Step 7: to Get the domain name, go to Active Directory and copy "Primary Domain"
Step 8: After you hit next, Click on your account if it already exist or log in with your account via email/password.