Have no idea why the increased scrutiny on returns of late but ran into same thing myself. When Wyze determined there was a hardware failure they sent me a laundry list ot information required to process. 
Even at Starbucks, they occasionally request proof that it was purchased there, that day to get my free refill. They always seem to be out of those little green stoppers, too! 
While we are waiting for Wyze, what kind of camera & problem? Sounds like it was working to start with and then went belly up. 