It appears that Apple’s digital online stores are closed to Russia. MacRumors highlights a report from the Russian site iPhones.ru. According to the piece:
…iTunes and App Store purchases can no longer be made by Apple device users located in Russia, leaving them unable to pay for apps, media, or Apple services.
Adding money to store accounts using regional bank cards is reportedly not working. Adding funds to online accounts through Apple gift cards will not work either, according to the piece. MacRumors says:
It's not clear whether the issue is a result of action by Apple, Russian banks, or the Russian government. If confirmed however, as it stands, users in Russia seemingly now have no way to make purchases in the App Store or the iTunes Store.