If you have the receipt portion of the USPS, you can track it and they will tell you when and where it was cashed. If he put it through a bank account, there's your smoking gun.
Yep, that is the plan. Unfortunately the top part of the money order and receipt are locked in my desk drawer at work and the office has been locked up since March 20 when they kicked us out due to the pandemic. It will be at least May 15 before I can go back.
