Perished rewards are those rewards that are not staged (redemption code generated) and have gone past their expiry date if one was specified.
Example: If the reward is valid until Nov 15, 2020, and it was not redeemed (not even staged) then it will be moved into the category of perished rewards and will be removed from the guest's account after Nov 15.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)