Skullgirls Mobile have a strict politic about downloading the game in another place that is not the official store (App Store or Google Play, for example), so it’s 100% bannable. But, recently, I found out that the game can't ban you if you are using a .lua script, that Game Guardian users do, it's essentially a best choice, since you are using the original game and just scripting by a third application. If you know how to mod games and make .lua scripts, you should do any script to Skullgirls.