Any modded game has chance of ban. None are 100% safe. My advice.....Don't use any mods in PVP. Other than that I've been playing this mod for over a year and a half. No ban or warnings. I never touch PVP with mods.
If you're not rooted then you can't use Google sign in. Download the playstore version and link your account to Facebook. Then install the mod apk again and then you can use it with Facebook log in.