A while back, Facebook announced that they would be launching an @facebook.com email address, and that all of their users would automatically receive one. However, this new email address is now listed as your main contact address on your timeline. Here's how to change it back.
Click on your Timeline, and then click on About.
Scroll down until you see the Contact Info box, see how your email address is different.
Click on Edit and re-activate your old email address.
- Press Save, and you're done.
I hope this post was useful, please feel free to leave any questions or comments below.