Yep, we had bans due self support... Flagrant cases where multies share location and names or pictures are common cases that can be reported. Remember that the Game terms and conditions do a mention to the single identity when you use one account, to login - so dont share accounts with someone else please- or to have a benefit for a main account.
Of course you can have a brother supporting you and sharing location, but when accounts ip/device is shared, names are so obvious and pictures too, and the cases are so flagrant, this can turn into a ban.
https://nordeus.helpshift.com/a/top-...=web&contact=1