Error: URL Blocked: This redirect failed because…

Hey, I’m using your plugin for a bunch of client websites. It worked fine up until the last few weeks (not really sure when the first problem occurred) and this is the message I’m getting from Facebook when trying to login:
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.

No changes have been made on the FB App nor the WP side.

Valid OAuth Redirect URIs set on FB is https://mydomain.com/wp-content/plugins/wordpress-social-login/hybridauth/?hauth.done=Facebook

All other fields on Oauth setting page are left blank, Enforce HTTPS is set to ON.

Needless to say I’ve tried 50 different combinations to make this work (at least for one site) but I keep getting the same error no matter what I do and which site is in question.

I also must point out that on a couple of ecommerce sites I’ve swithced to WooCommerce social login which worked perfectly.

Now, since you haven’t done any updates for the plugin in a year, I guess the error comes from the plugin side.

Are you aware of this error and would you be willing to help out by providing a quick fix?