Hi Anna,
Thank you for you reply.
We are able to login to EOP and FOPE. FOPE has been made read-only and no changes can be made to the configuration. This is as expected and we don't have an issue with this. When we try to access quarantine.messaging.microsoft.com to release end-users quarantined messages we get a "You do not have permission to access this application".
I hope this clarifies it a bit.
Regards,
Jorge