Welcome to the Asana Community Forum @anon88531223!
First of all sorry to hear about the issue you are facing.
Did you try this already:
How to change your email is explained here: How to control your profile settings in Asana | Product guide • Asana
Basically you’d add your new email, then amend all so your new one is the preferred one and then remove the other email address.
If the email domain stays the same in your case it should normally not create any issues.
Only for the super admin to amend the email I think support will have to do it. You can email them at support@asana.com