正式帐号... for foreign players..

Hi i am Korean and playing 英雄枪战. But i cant synchronize my account because i dont have chinese mobile phone number. I am playing 英雄枪战 as guest account.. the problem is i will change my phone into new one and i know that i cant use my current account because my account now is a just guest account... Dear developers.. may i ask you to make function which is synchronizing account using email adress like other Google play games? Or just making function that generating account and password only for this game. In 王者军团, they provide account name and password even though i play guest account so i can play using my account in any devices.. i really want you to provide the function.. I cant make in app purchase because i dont have chinese phone number even though i really wanna make in app purchase.. Also i really like this game and i dont really want to lose my account.. i am begging you.. please consider foreign players who really like your game..