Actually - found out that they needed Experian unfrozen (we unfroze TU). BUT huge problem: The "Alaska Airlines Platinum Plus Visa Card" that showed up on the "application pending" page DEFINITELY is wrong. We applied using this link from the Wiki:
I am 100% sure I used that link. It applied us for the Platinum Plus card - though it clearly states it is for the Signature card. Actually lucky we got declined and called recon. They ended up canceling our application at our request.