Facebook Like Count seems to be swapped on two different pages

Our site, http://offerletter.io, has gone through two rounds of domain swapping - first, one that added www, and another that added https.

I've been faced with an odd situation where the front page has zero Likes:

http://ift.tt/1VTpTid

But the Blog page has all the front page likes.

http://ift.tt/1XusMVx ( 700ish )

But... the Facebook debugger is reporting that both pages have 0 likes (!?!)

Any suggestions?

I have three levers at my disposal here, AFAIK:

The og:url property

the og:secure_url property

The data-href link I'm linking to in the Like widget