I can't unlink the EA account.

My EA account has been blocked. I don't know the reason, but I assume it's because I'm logging in from an iOS device or a computer. I've created a new account, but I'm unable to unlink the blocked EA account. When I try to unlink it, I get an error. It's definitely not a Wi-Fi issue, as it's working perfectly. I've tried everything, and I'm writing here in desperation.

P.S: Could this be related to the fact that I am from Russia?