Also contact your bank to see is there any issue in sending payment from Russia
Due to the ongoing conflict in Ukraine, europe and lots of banking systems have sanctioned Russia. Master, visa, both suspended services in Russia. Swift banking system is blocking Russian customers.
And if I am not mistaken, paypal suspended services in russia mid march somewhere already ....
I am guessing that MIR banking is also not working with transactions towards european countries. (or UK for that matter)
This will be a tough one.