Aris 9.8 Architect/Designer Client - Missing Administration tab

Hello, 

We notice a strange issue with one of our Aris users that has Architect permissions like I do.

We have the same function and license privileges and in the same associated user groups.

When I log in via the Aris 9.8 Architect/Designer client to the same Design Server I can see the administration tab, but when he logs in he doesn't see the Administration tab.

What can it be?

Regards