Thanks for the info about the cheques. I just started using Snap, so will be vigilant about keeping receipts until cheque is received.
I don't understand the logic. If the submission was approved, there should not be any going back to say it's not when they get ready to send the cheque. The review process is when the get the request to claim an offer, with the receipt. If it's missing, that's when it should be refused, not after it has been accepted.