from offical TURKISH forum:

ben şimdi 4 tane char açıp bronze pre yle paralı koxp kullanırsam ban yermiyim bişi soleyin lutfen 4 tane bronze alıcam 4 tane paralı koxp alıcam
Translation from a friend : now if i open 4 chars with bronze premium and use koxp with money, will i get ban? tell me something plz i will buy 4 bronzes and 4 koxp with money

In his mind Premium = no /ban. Maybe he is right.