MixChamp seems to be broken, just tells me "Your account is not set up properly." and then when I go to set an alias nothing happens. I also can't open my profile from the sidebar, I just get an error page that says
Cannot GET /player/https://steamcommunity.com/openid/id/76561198019267942
My alias/profile still shows up in the list of players from the sidebar with my stats and everything intact, though.