Can't access old account with old email address

I had to create a new account with a 1 appended to my username because I no longer have access to my old email address and can’t reset the password for KeithWeisshar’s account. How do I private message the admin to have the old KeithWeisshar’s account removed with the old email address which has been shut down.

Just did.

Do you want to keep that account? If you do have you gone into the Dashboard and tried changing it to the new email address? See example image below. Click on, tap or activate image to enlarge it.

First select and delete the old email address, type in the new email address and Save it.