Thushanka yes. Have you noticed the error message is exactly the same as your previous issue ? Did you manage to solve the other one ? The last message offered a suggestion that it might be linked to a missing privacy policy link in the Facebook App settings, which caused Facebook (or Twitter in the example) to not send back any email. Make sure your settings on Facebook (not in the extension settings) contain all the required information.
Additionally if the app is in dev mode in Facebook, make sure your user is listed as a tester of the app.
