Can’t access my account email to log back in

About 2 weeks ago, I started having an issue with the app not showing my user-created lists. After about a week of it not working, I decided to see if logging out and back in would fix it. Problem is, I forgot that my user email is an old college email that got deactivated (I was just always logged in so I forgot it was tied to that email). When I tried to log back in, it wanted me to enter a code sent to that email. I tried contacting support to get my email changed, but to no avail. Does anyone have any ideas to get back into my account?