Hi Stephanie,
i don't remember how i found a workaround for the problem the first time, but i remember that the problem was due to a javascript issue of the 'Masonry' feature of Flexicontent component in home page.
Not sure if you was able to contact makers of Flexicontent to fix it, otherwise it will could a recurring problem.
PS: testing your website home page
http://deadcanadians.ca/ the problem doesn't occur, facebook login working correctly at my end using Chrome the latest... so not sure how you experiment the issue now.
Best
John