Please try logging into your account through a computer and then try linking FBM - https://app.qeepsake.com/users/edit - again. There is a known issue with FBM that it doesn't always show up when on an iPhone running Safari. You could also try using Chrome on your phone.
We are working with Facebook to resolve this issue. Please email us at firstname.lastname@example.org you can't access FBM once you try it from your computer or with Chrome.