When I created my account I used my main email. I recently changed the my email in account settings to another one I had. Now I'm trying to change it back to the one I signed up with, but I won't do it. Could someone help me here please?
Try changing it again, then clear the cache and refresh the page. If that doesn't work clear the cache again and attempt once more. Otherwise I don't know why it wouldn't work except for you might not be using Firefox.