Unable to log or create user into open.rocket.chat

I tried to log in into open.rocket.chat, but I’m not getting past the login screen. If I try to register a new user it sais my email is already in use and if I go back to “Forgot your password?” it will say “Error trying to send email”.

As an alternative attempt I tried logging in via github, I get a new dialog “This email has already been used and has not been verified. Please change your password.”. It doesn’t matter what I type as password, dialog returns “Entered password is same as current”.

Thus I’m stuck and unable to log in or create my account on open.rocket.chat. Please advice.

here too.
got no mail for “register a new account” for chat server.
but, “register a new account” for the forums worked and i was able to post this…