When I invite friends from my application, they got a notification on Facebook saying I invited them to my game. However, when they click on the notification they got a error saying: "The requested page can not be displayed right now...". Could the reason be that the application is not published on google play or app store yet? If not, any suggestions?
The problem will be in your application registration on Facebook developer site. The
invite button should show a notification to the user, this notification should be linked with your application
URL on Google PlayStore. The problem will be in this part. Make sure you are typing your app link correctly
Here is a useful link for Facebook registration