I don't know if this is suggested before( which is likely)
But we need more payment methods so more players can buy membership.

More payment methods suggest more ways for us players to buy membership
This also means more funds for you guys..

And also with more payment methods, it will entice other players to buy it.
This also grants more accessibility to the game, being able to buy membership.

Even though this is short and repetitive, I hope it get to the point .