A voting system where you need to put in your emails and password? No thanks, it is easy for me to step back on these kinds of offers without even saying the consequences I will face by giving up valuable information in an app, aside from that you are asking this as a favor without anything in exchange so basically you'll be the only one benefiting. You'd be better off availing this kind of service on guys selling Twitter followers, likes, and IG followers which you'll find it more easier since multiple accounts is one of their forte although I'm not recommending it since there is no guarantee the authenticity of the number they will give you, you should also keep in mind that these types of games where they require voting will always have an eye to those who are padding the votes.