Please try the following:
- Make sure that you didn't deny Alphabear the Photos/Media/Files permission.
- Make sure that you have updated to the most recent version of the Facebook app.
- Make sure that you have updated to at least v1.0.0 of Alphabear. Prior versions don't have the Share button.
- Logout from the Facebook app, then log back in. (We don't understand why this matters, but sometimes it does.)
- Make sure that both apps (Facebook and Alphabear) are running at the time you try to share the bearaphrase.
- Don't share to an album--there is a bug preventing the game from sharing to an album.