Yesterday we tried several times at Kmart, but CFBP did not go through. First, the CSR claimed he could not find the "MasterCard" option, then I let him try "Visa" and it was there. I asked him to search "MasterCard" again and he found it.
Then everything was fine until the last step before I swiped my debit card. It gave him some error like "payment not available".
From what I read above, I had similar problem as those tried at WMT. That's why I don't think this was due to some change/update by WMT.
Maybe they did it wrong or the system was down or something. Kmart is unaffected by this change/update.