My email address is unavailable. How can I change my email address
If you can not access email connected to your Envato author account, you will need to contact support team. Submit a request through this form . Select “Being an Author and My Account” on that menu and let them know what happened.
You can change it here https://help.market.envato.com/hc/en-us/articles/7133766921113-How-do-I-change-my-email-address- but if you cannot login and cannot access email to reset logins then you will need to talk to support