How do I change my email address if my email provider stopped working and now I can't see the confirmation code?

I once registered an account with Adobe Stock Contributor as a seller. But about a year ago, the company that operated this email service simply shut it down, and now I can't access my email. As a result, I can't use my account on other computers because I need to enter a verification code sent to my email. To add an additional email address, I have to enter this code again. Is there a way to resolve this issue? Is there a way to resolve the issue privately, providing all the necessary proof? Or is it possible to receive this verification code on my phone instead of by email?