This issue has been resolved on Facebook’s end.
A little while ago, the linking from the Facebook app back to Final Count stopped working. After spending some time researching it, this appears to be a bug in the Facebook V5.0 app. There is an open trouble ticket with Facebook, with multiple developers reporting the same issue.
Final Count will post timers to Facebook correctly. However, if your friends click on the post in their feed from within the Facebook app, it is intended to open the Final Count app and import that timer. What is happening instead is the link takes the user to the Final Count website.
I will continue to monitor the situation, and report back when I know more.