Help with merging wow account to battle.net account?

when i try to merge my wow account to battle.net for the battlebot, it takes me to a login page. i type in my wow info and it says username doesnt exist. i try to make my own account and when i click united states, half the page gets cut off so i cant even see the checkbox for accepting the terms of agreement or the continue part. Is there a way to fix that?

that same thing happened to me im trying to resolve it i just sent an email explaining my situation to billing@blizzard.com