Are you still having this issue?   Just wondering because I can accept credit cards for sales receipts through the QBO desktop app with the Mag Swipe reader.  If so is your App up to date?   Also I was wondering what plan you are subscribed to?  I have Essentials.   That could be any issue, perhaps the lower plans don't include that option?   And I'm not condoning that if that is the case.   That functionality is the most basic feature any accounting software should have.