Error 6:10

I can’t log in to Warcraft III. I get an Error 6:10. I searched the forums and can’t find a solution. I sent an email to Blizzard support and they responded with a long email containing steps to follow (all of which I have already done… restart, flush DNS, etc.) So I responded to let them know that I have done all of that (step by step). They responded back with practically the same email and marked the ticket as “Resolved.”

Has anyone found a resolution to this?

Do you own Reforged? Or are you using the old CD key to access just the classic mode?