I know I’ve been out of the site for a while, but I’m the user DT Cooper and I was locked out of my account. I never saved said account, and now I’ve been locked out. Is there a way to fix this?
You can look at the question How can one link / merge / combine / associate two accounts / users? (Anonymous / unregistered / cookie, or OpenID / registered) on MSE and this answer.
Basically you go to the contact button at the bottom of this page and then describe exactly what your problem is.
On WorldBuilding you visit this site, which describes the exact process: I accidentally created two accounts; how do I merge them?
If you have two accounts that you would like to join together, please sign into either account, visit the contact form and select ‘I need to merge user profiles’. After you contact us, the Stack Exchange Team will reach out to verify that you own both accounts. If we can confirm your ownership, we will initiate a merge.
If you can't remember how to log in, go here and enter the email address you used to create the account you are trying to sign into.