[email protected] is not active/found

Dears,

I try to log in to my old account here in WP but it says :?“Your password needs to be changed. Please check your email for a link to set a new password.” though I log in with my correct?Username and?Password.

Also, it says contact [email protected] if you are unable to access your account’s registered email. So, send an email to the email mentioned in the notes ([email protected]) but I received an email says that the email address ([email protected]) is not found.

What to do?