Finally got my first LEGO cash back credit from CP1. Took 34 days, but I haven't checked in the last week, so I wouldn't be surprised if it was credited on the 30th day from when it first posted on CP1 as "pending".
You didn't give much details, but follow all the requirements per the platform you are using and require a signature. If something feels fishy cancel the transaction.
Found about 35 of them, all either on the aisle display or mostly hidden on the top shelf despite showing none available locally....was told each store got in 8