When you make payment as a PC client (Google Play), and you wish to purchase with a Google account that is different from the one you use to login, please refer to the following:

(1) After entering the game, click [Settings] menu

(2) In [Settings], click [Info] page

(3) Click [Google payment account]

(4) If there's already a logged in Google account in the browser, the system will automatically log in with that account. If you want to change to other account, please log out of the browser and retry.