You can change the primary account email address in a couple simple steps:
Click "Change account email" under the email address
Enter the new email and click "Change"
You'll receive a confirmation email with a link that will confirm the email change. Click on the link and you're all done! 🎉
Didn't get the confirmation email?
If you don't get the email, try searching for the subject "Confirm your Yapp account". Make sure to search your spam folder, just in case!