I can change my Cloudflare eMail address, but I can’t see how to change the Community email address.
To change your Cloudflare Community email address, you must first change your email on your main Cloudflare account. After you’ve done so, log into your Cloudflare account using your new email, then select “Community” from the “Support” drop-down menu and log into the Cloudflare Community using your new email. This syncs your new email with your Community account. Let us know in case there are any posts from your previous account that need to be merged with the new one.