To change your Pawns.app email address, you’ll need to enable 2FA first. You can find more information on this procedure here: https://pawns.app/blog/how-to-activate-2fa-for-pawns-app/
Once you enable 2FA, you’ll see a little pen icon next to your email address.
Once you click on it, you’ll be prompted to enter a new email address. Click the Confirm button once you’re done.
You’ll be prompted to enter the pin from the Authenticator app.
Once you type in the current pin from the Authenticator, click the Authenticate button. You’ll get an email to confirm the change (at your new email address).
Click the Verify Email Address button and a new tab will open with your browser.
You can now log in with your new email address.