Facebook Authorization Issues

Hi – about a week ago, this plugin stopped working. When I try to authorize my Facebook account again, I get this error. Can you please direct me how to fix this exactly? Can’t find much about this. Thanks so much!

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.