My email that I opened the account with is no longer active. How can I change it to a new address?

You can manage your Apple ID stuff by logging on appleid.apple.com.

Once you are already logged in, go to the Account section, and choose Edit.

Choose Change Apple ID and enter the email address that you wanted to use.

Hi - you can follow the steps proposed in this article to change your Apple ID associated e-mail: https://support.apple.com/en-us/HT202667