I'm also trying tp upgrade from my free membership to Premium.
However, the only options given to me are for CCBill. There's no sign of WM or Liqpay at all.
Sequence I'm using:
1. Login on home page
2. Select “Upgrade” on right side of page
3. Select “Subscribe as Premium User” (this is the only choice)
4. Only CCBill payment options appear, WebMoney or LiqPay are not present.
Is WebMoney still supported by this game?
I'll try and attach a screenshot of the options given: