We currently don't have support for this. However, Facebook Instant Articles is in our issue tracker to investigate for the v7.1 release. I don't have a timeline for this yet, but wanted to let you know it's definitely on our radar.
Sorry for not getting an email notification. We've had a few users report that they've had this problem, but we haven't tracked down the problem in the forum software yet.
JFBConnect support for Facebook Instant Articles
