Cannot add microsoft email to project in email settings

[Account Management]

I get an error when we try to click "Microsoft" when choosing to add external email in email settings (Channels & Self Service)

Couldn’t add email address.
Resource was not found

For some reason, since 3 days it says our email accounts cannot be connected.

We use an email such as support@cognillo.com to auto create support tickets, but it is not working and our customers all use this.