Why does one of my purchases have a status of "Pending and unconfirmed"?

Although the store has not yet confirmed that they have a record of you clicking through Extrabux and then making that purchase, we've gone ahead and temporarily added its amount of Cash Back to the total "Cash Pending" amount in your account. We're now trying to convince the store that you used Extrabux. If we're successful, everything will then proceed as usual. Otherwise, we'll then remove this temporary cash back adjustment.