A program that grants points for using Bing search, which users can redeem for gift cards, sweepstakes entries, or charitable donations.
This just happened to me. All the receipts should have been valid, but the last 6 were declined, with the message that "one of your submissions was invalid. Please try again" which, just like mentioned above, only resulted in the 2nd scans only being duplicates.
Has anyone found a reason or solution? I have put in a ticket but if MSFT is true to form, it will be months before I get a reply.