I want to change my facebook account to email

Hi @Viddu!

If you wish to change your facebook email address, you need to do this from your own Facebook account and this is not something we can help you with as we do not provide Facebook support.

Now once you have changed the email address, you obviously need to update the game if you have it installed on a mobile device. Just disconnect the game app from Facebook and connect it again by using the new email address.