I've been trying for days to contact support. The button on the app does not work, and the phone number I found "isn't monitored by hopper support". I need to book my flight before the price goes too high, but the app won't let me do that either. Wasted money doing the price freeze if I can't even book. Really disappointed in hopper. Price freeze confirmation number is 83P481GO. If hopper can get this worked out with me I'll happily change my review. I've loved this app in the past.