To fix this, you need to delete the friend, then readd them again.
To delete a friend, open facebook and click Friends:
Then click Edit friends
then search for the person you want to delete, and click the delete button:
Now you just need to add them again. Once you have added them, wait for them to confirm you as a friend, then check to see if posting are displaying, either by viewing there profile, or using whichever bonus checker you use.
You may also need to re add them as an evony ally after you complete this. please make sure you check!