Common ProblemsError: "That account does not exist. Warcraft III requires a new Battle.net account. Please select 'Create New Account' to choose a new name and password"
This error means your Warcraft III Classic account has been deleted because it was inactive. Your Warcraft III account is considered inactive if you haven't logged into Battle.net for the last 90 days.
Blizzard Customer Support cannot restore inactive Warcraft III Classic accounts.