Sometimes, if you have an age restricted page on Facebook, you may find that your avatar is not aggregating correctly into Stackla.
In order to solve this, you will need to follow these steps.
Login in to your stack.
Go to Manage Content.
Go to options at the top of the manage content page and tick the option to display the avatar column.
Find an item of content which does not have an avatar. It will normally be a grey image of a headshot with a line through.
Hover over the image and this will reveal a refresh animation.
Click on that to reload the avatar. This will reload the avatar for all content which was posted by that user.