Glad that worked! For some reason, Battle-net does not work well with regular Wine for some time now. It works but when there is a new agent update for Battle-net, it gets borked and either can be fixed with a complete reinstall or as a temporary fix, symlink the new agent to the old one. Anyway, these problems are not present with GE-Proton. Heroic made this easy by adding built-in downloader for GE-Proton. I guess it would be nice if Lutris does a similar thing.