[Solved] Facebook login and Url blocking

hello 

I followed the facebook app creation instruction step by step and my app was created. when i want to login to facebook via the facebook login button, it shows me the following error:

URL Blocked: This redirect failed because the redirect URI is not whitelisted in the app’s Client OAuth Settings. Make sure Client and Web OAuth Login are on and add all your app domains as Valid OAuth Redirect URIs.

how can I fix this? my Oath redirect uri was: ahandepo.com(my website domain). I change it to this url: https://www.ahandepo.com/people/auth/facebook/callback but still the same error shown.

I check all the possible mistakes in app creating but I couldn`t find any mistakes. I got confused.

Please help!