If you created your account with an email:
- Tap your avatar or profile picture on the upper left-hand corner of the home screen.
- Select View profile.
- Press Edit.
At the bottom, tap the Link to Facebook button.
To unlink a profile from the social network app, follow the same steps and select the Unlink button.
It is important that you link your Facebook profile after logging in with your email and password. If you choose Sign in with Facebook without signing in, a new account will be created with that information.