"The connection to the server is broken." Russian client

Greetings. Today, however, I wanted to play on your server, but I'm from Russia, and I prefer to play on the Russian-speaking clients. Found on the Internet Russian client wow 1.12.1, downloaded it, installed, registered Realm, went to the server, create a character and really thought that nothing happened, and I'm going to play on the Russian client, but I was throwing 20-30 seconds. The reason: "The connection to the server is broken." What could be wrong? Help, please.