When you click “Claim!” on a ribbon, the OPs and XP instantly go to your total, but you may not be able to share the ribbon due to Facebook issues — as it’s their platform and they control everything you share on the platform.
When the inability to share happens, your ribbon will remain in your Achievements menu with a “Share!” message on it, instead of a “Claim!” one.
So, the idea here is that “Claim” and “Share” are two different things.
It can happen sometimes for you to be unable to Share your ribbon for a few days to a couple of weeks.
But the function will be repaired eventually, and you will be able to share your reward — even though it was claimed a while back 🙂