no functions seem to be working except under my name
Then I would expect Trusted Locations issue. No code can run in a non trusted location, thus no Environ variable thus no function value. You logging in on another pc where the file is local should mean you wouldn't have access to it so I expect the fe copies are on a server.
Agree with the Ajax's comments too.
EDIT
OK last 2 posts weren't there when I started
The general consensus would be that you're asking for trouble by sharing one non-split db.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.