If you don't have polish bank account:
We recommended payment method: PayPal. Especially when you want to pay in EUR €, USD $, GBP £. (PayPal take care of the conversion)
We recommended pay by link:
*We do not officially support PayPal. We created the opportunity to pay by PayPal for occasional situations (especially for foreign customers).
If you need help, please let us know. ☺