Why is the belt falling off?

What is your question?

All of the pulleys are secure and do not wobble. The belt will just fall off, it's not damaged or stretched. It's not when its raining. Any ideas? It's a 2001 turbo beetle. We can put it back on and it be ok for a couple days but it just falls off again for no apparent reason.

What makes this problem better or worse?

No idea it comes off cold or hot

How long has your 2001 Volkswagen Beetle had this problem?

A couple weeks