Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello, when I try and use the command ".account password oldpassword newpassword newpassword" without quotes of course, I get a response saying "There is no such subcommand"

Can you please advise?

I got the same problem, anyone can help?
I tried disabling all addons to rule out any command interference, deleted WDB/WTF just incase, but no luck with that either.