How can I fix the likegate for pay with a like?

Here is an example: http://www.kindergartenworks.com/freebies-free-printables/student-profile-sheet-freebie-download/. I'm having my readers say that they can't see the hidden content after a social share. I'm able to replicate the issue sitewide.
I don't want to have to uninstall other plugins to see if one is misbehaving with yours. I haven't added any new plugins lately so there shouldn't be any bugs between them. Any other suggestions?