Literally the worst app ever. You pay for a hotel room in advance. Get to your hotel finally with your reservation to find out the hotel doesn't take 3rd party payments and they want you to pay at hotel. Can't get a hold of customer support through the app at all. Hours with no response. Can't get a refund for the room you booked with hopper app, can't get your room because you can't pay twice. No one gets back to you help you. Now I'm stuck outside the hotel with no room that I've paid for.