Changing the main email is currently unavailable. We are trying to figure out how to provide this option as it has many internal implications. We are currently working on this!
For now, we have a feature called “link accounts” that will let you visually manage all email accounts and auths that can access your Account. Please go to your Account → Linked Identities → Link new account.
This will let you sign in with both email addresses. Another option is for me to help you cancel your current account and we can activate it again under your new email.
Please send me a DM on Slack if you need further help.