Due to changes in Webmoney internal policy, we had to make a transition to a new type of integration.
Unfortunately this new integration (via PayMaster24) does not allow us to charge our customers in RUB (unless we open a company in russia...). We're working on the issue with WebMoney, meanwhile, if you want to use Webmoney to purchase our products, you need to exchanged WMR to WMZ or WME before buying as we can only accept USD and EUR.
We also added the Yandex payment option (though epoch).
I know it's the worse time to switch to USD only for Russian customers with the RUB going down, but we Webmoney lest us no other choice.
We're actively looking for another third party biller in RUB or find an agreement with Webmoney without opening a company in russia.