Reward points glitched??

Hello! I had about 10$ dollars in HTrewards (bday and anniversary) and I decided to use them since I noticed HT was having a sale! Anyways, I went to place my order and right after I clicked ‘place order’ it took about 10 or so seconds and then said payment error? I went to reenter my information thinking I might’ve put my card in wrong by accident or something and that’s when I noticed that both of my rewards were gone and says they were redeemed on 12/1 ?? (It’s not even december where I live yet) has this happened to anyone else? And what do I do? Thank you.