All supported payment methods and currencies are determined by Xsolla for hero-wars.com or Facebook for the Facebook version of the game.
Note: Some currencies displayed in the game may not be supported by the payment provider, Xsolla. If your selected currency is unavailable, Xsolla will automatically convert the price to USD.
If you have any questions, contact the Support team of your payment system. As they process all payments, they will be able help you out.