Used this app for a couple years now without any incidents of any kind. I always got the rewards I had purchased, as promised. This would be a 5* review except that since updating to my Samsung Galaxy S22 Ultra this week, I have been unable to open the app. After I click on the icon, the app "opens" but hangs in the background. When I try to switch to the app, it continuously hangs in the background and fails to open. I hope this is resolved...