Don't know if this is outside PS but there's a current glitch where unsold cards are not going back to one's binder and cards you win via outbidding won't show up either. Hopefully this helps those who may be unaware.
Two things here: avoid bidding on any card and do BUY NOW instead. Even if you win the auction through bidding, the card will not show up in your binder and you will be down coins. If you are looking to SELL, I recommend you put up your cards for 8 hrs at the minimum. Avoid one hour auctions unless you're absolutely certain that your card will sell. Otherwise, once that hour is up and it's unsold, your card will be locked through the glitch. Hopefully EA fixes this B.S. soon
