Login problem

My login credentials for my wordpress site dashboard are not being accepted.

When I clicked on the “forget your password” link, I used the original email that was used (which was an email under the original test domain).

My main domain took over the account (including my avada theme) a few years ago and until today I have had no problem with the credentials.

When I clicked on the “forget your password” option, it probably sent a new password to the old email address (as mentioned above) which is not hosted. Any suggestions?