Using Outlook for Android in business environments for email and scheduling
Here is the final refusal of OfA support:
"I do understand your issue.
You are unable to add your account with Advanced settings and app is failing that way. Simple is working.
At this moment this cannot be checked, we have couple of more imprtant issues related to IMAP that are being working at and ticket as yours wont be looked at by engineering team anytime soon since imact does not exist. Your account works with Simple log in, Advanced issue has nothing to do with GDPR complience and therefor we wont be able to assist you further on this issue at this moment."
... no comment from my side.