Problem logging into the US server and the game closes when

Problems with connecting to the US server for starcraft, I haven’t played for over a year, because I didn’t have a PC, and now I want to go back and I can’t log in to the US server.

I can log in to the EU and KR server, but it ends up being a new account, as I have many hours of play and completed campaigns.

How do I log into the US server, or transfer my already saved data to another server.

I’ve been a player since 2013, and I paid to have all game versions.