When I originally made my PSN account, I used an email from iCloud. Though, I switched to gmail. I can sign in with my email on both the website and the Playstation itself. However, my forum profile shows the email I used before instead of the one I use now. I also tried to find how to edit it, but couldn't.
Solved! Go to Solution.
The email is linked to your PSN account, so there is no way to change it via the forums, only from PSN. Unfortunately because of this your email on the forums is locked in place, resulting in the glitch that you are experiencing now causing the email in your profile to no longer be the correct email.
As far as I am aware, there is no way to correct this. You can, however, send a message to a member of the Mod team and ask them.