I see the issue now.
You identified your account with the email you used for FB and it results in you losing your FB account for Ol West.
I also identified using my FB for Ol West and I tapped the 'Log in using Facebook' for my iOS and I got into my FB account.
Using the email that is the same as your FB will just create another new account due to it not being linked with the same emails(eg: Creating an FB account using a email).