Key hash doesn't match while facebook login in android

Question

My app uses a simple facebook login. I have entered the keyhash in my app dashboard, key_hash section and I was able to login successfully. Now I have published the app and

Answer 1

If you are facing this problem then put this key into your developer.facebook.com

Then make sure your app is live on developer.facebook.com

This green circle is indicating the app is live

If it is not then follow this two steps for make your app live

Step 1 Go to your application -> setting and add Contact Email then apply save Changes

Setp 2 Then goto Status&Review option and make sure this toggle is Yes i added a screen shot