Prozesse in Microsoft 365 zum Einrichten von Office-Apps, zum Einlösen von Produktschlüsseln und zum Aktivieren von Lizenzen.
Hi, R0bse
Good day!
Thank you for posting to Microsoft Community. We are glad to assist you!
According to your description, it sounds like you're experiencing a frustrating issue with the initials in Microsoft 365. This problem has been reported by other users as well, and it seems to be related to changes in how Microsoft 365 generates initials based on user profiles.
Since the given issue has been affected your organization, it is s best for you to raise a ticket with Microsoft Online Tech Support team which they have higher permission, they would be able to check on the backend and assist you further - Request support - Microsoft 365 admin | Microsoft Learn.
Note: Please be kindly to understand for our community team that we do not have the authority to access into the backend, thus, please refer the Microsoft Online Tech Support team for further assistance. Because they have the higher permission and able to assist you on the backend.
Thanks for your understanding in advance!
Thanks for your kindness and your understanding would be highly appreciated.
Wish you have a great day!
Sincerely,
Alex | Microsoft Community Moderator.