Facebook Comments Query

So a couple of things that’s been bugging my site – literally, over the past week:

1. Why am I not able to moderate comments in my last few posts, even though I’m the admin of the app I created?

2. Also, for the recent posts in question, I’m getting an error message that states that “The … URL is unreachable”. On using the debug tool, this is what I get:

https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fspydistrict.com%2F2013%2F05%2Fenglish-rain-by-gabrielle-aplin%2F

Would be great if someone helps me fix these errors. Thanks a ton in advance!