The game is protected with both SafetyNet and obfuscation. This doesn't make it impossible to hack, it just makes the process a lot more painful. I'm working on breaking the security of the obfuscator they're using but I'm not sure how long that's gonna take :/, The problem is that I have a lot of school work at the moment and I'm working on a game of my own, so I'm continuing on with it whenever I can. And to answer your question, no, in this particular case, it's not possible to increase the reward from the videos because that's now server-sided. It never used to be, but it is now.