So thats two of us that can't, has anyone successfully changed their password?
I feel like a bit of an idiot, because the odds are that it is a user error/mistype but Ive tried it a few times and im pretty sure entering it right.
You're not alone.
I struggled changing my mother's password for her on Sunday. I tried the two different user names they log in with - nothing worked. (They each have a email@example.com address under their account).
In the end, it only worked when I put the username in as the xtr43000xxx - which seems to be some underlying account master username. Sorry, I can't remember if it had the @xtra.co.nz at the end.
Perhaps try and use this strange user name if your account has such a thing.