A pretty clear picture has been painted. I know I've tried to be crystal clear about my experience.
The main takeaways for the 2025 offer seem to be 1) don't rely on the examiner to discern that you've made two purchases in the same transaction, and accurately determine the rebate amount due. 2) they're sending out both the restricted fuel, and general debit cards, also seemingly at random.
One last tidbit I'll leave about the 2025 offer, in a similar vein as #1 -- don't combine the fuel debit card and cash in the same fuel purchase transaction, or risk paying the higher credit card price for the entire fuel purchase. In a pre-paid situation, how the attendant enters the transaction can cost you the "cash discount" price. It is a debit card, but must be processed as a credit card. And in physical form at least, will get rejected at the pump terminal.
It's the final step, and really kind of fitting for how the whole experience has transpired this year.