Hi Martin, unfortunately I cannot help off the cuff, but I just sent a mail with the similar issue and a proposed fix to this list on the 21.01. which is held back by moderation as I was not a list member at the time. Here is my mail cited:
Hi,
I am having trouble changing my profile data: The fields I want to edit are my displayname and the mail address. Both are greyed out when editing the profile as they are provided by the IDP, but upon opening the IDP Self-Service these fields are not present.
Coincidentally I work for the company providing the IDP software, so my guess is that the corresponding attributes are not exposed by the Self-Service (more info: https://docs.software-univention.de/manual-4.4.html#user-self-service ).
If this on purpose some information on how to change the fields (e.g. via contacting the admins) would be great, otherwise I can offer to help to configure the Self-Service accordingly.
Best regards Jan-Luca
Best regards Jan-Luca