I click on the button to get double rewards for watching an ad m instead of an ad, I immediately get the button to claim the normal reward. This happens often. I've lost a lot of extra reward points this way. The only pattern I see for it is if the game is not played for a while (WITHOUT exiting the game), then coming back to it. Maybe I put the phone down for a while, or go do something with another app *without* exiting this game. When going back to the game, things like this happen.