After traveling to Malaysia, I was notified that Rewarded Play is not supported in foreign countries. So I contacted the support team to tell them I was traveling abroad for a few weeks, then they asked me for my personal information, after which they terminated my account without any reason given.
Rewarded Play had been consistent with payment (Amazon credits) for playing their games. But lately, it's been tougher as you need to play more for lesser points.
So I would say it's time I terminate them as well. It's pointless to even try to successfully hack their games (leave it playing for the minutes required and do other things). Delete all cache of the app and its games.