Once you had an account you need to add a new App.
Then go to settings and fill those fields
Please fill these fields with this info:
Display Name: Name of the App.
Namespace: "nameoftheapp" with no spaces.
App Domains: "localhost".
Contact Email: Your email for contact.
Terms of Service URL: If you have one please add it.
App Icon: Your App Icon.
And click on add platform and select Website
Do the same if need other platform like iOS or Android
Use This texts in order to get it working
-Site URL: https://localhost:8100/
-Google Play Package Name: com.nameof theapp.apptype example : com.orderingapp.ordering
-Class Name: com.facebook.loginactivity
Then go to Facebook Login Settings and write OAuth redirect URIs.
Here you have to use this to Valid OAuth redirect URIs
3rd.- Your Domain example: https://www.ordering.co/
We are almost there!
Finally go to App Review and enable your app as public, then go to your builder (my.ordering.co) and write your App ID to finish your settings.
Glad we can help
Have a nice Ordering