Cannot login

I am trying to log into a legacy site so I can close it down and not get charged another $300.

I have used every user/pwd from my keychain and pwds on Chrome. but get rejected. I tried the send me a reset password ink but it is a login to wordpress.-dot-COM account and I cannot access my own dot-org account.

I have backup codes but I don’t see how they can be used as I don’t think 2FA is active.

I doubt I have the chops to use MyPHP Admin, which would still require login to ww.wp.xz.cn account to which I have no access.

I’ve been going around and around on this and just cannot find a solution.

Please send clue.

The page I need help with: [log in to see the link]