Hey Royalrajeev,
I was able to fix this after hours of playing around with things.
1. Basically, you have to go to your App in Facebook Developer and then click on Settings on the left side dashboard.
2. Click +Add Platform at the bottom and click Website.
3. Enter your website URL in this box and click save. You will now be able to go back up to the top where it says App Domain and add your website URL there as well. You need both of these filled in as the first step.
4. Click Save and then Go to the left side dashboard and click + Add Product.
5. Select Facebook Login and enter your website use where it says VAlid OAuth redirect URIs.
6. You will then have the option to turn OFF ‘Use Strict Mode for Redirect URIs’.
7. Click Save Changes and you should now be able to go back to your WordPress plugin and click Reauthorize after entering the App ID / Secret.
Let me know if this doesn’t work or if the directions aren’t clear but this worked for me.
I do it but another error messages
1.5600
Error 2018-01-07 10:45:47 PM (#100) Only owners of the URL have the ability to specify the picture, name, thumbnail or description params.
5603
(#100) Only owners of the URL have the ability to specify the picture, name, thumbnail or description params.
Error 2018-01-07 04:52:49 PM (#100) Only owners of the URL have the ability to specify the picture, name, thumbnail or description params.
