BuddyPress permission issue

My internal website (not published to the public, only accessed internally), has a problem recently with BuddyDrive. When users want to see the files/documents in the BuddyDrive, they get an error message saying that they do not have permission to see them. The message is: You are not allowed to perform this action
However, if I log in with any user I can see the files.
The drive is public.
Am I missing something? Note that I have close to 0 experience in web development, as I am currently learning.