This app makes you watch ads to get certain things, like chests, speed ups. I have seen more and more ads not give the reward after watching. And even if you back out of an ad that doesn't give you the award, it will give you the same add. Multiple times in a row. Then to try and submit an issue isn't easy to find. I did the update to make sure it wasn't my issue. But not a bad game to kill some time when it works.