Lot of people are having troubles with it lately. I can see yours fine.
Make sure you clear your caches ever so often as well as making certain which version you are playing. One of the stickies has links.
Also, with the changes they are making, it is possible yours is one of the accounts that is affected and was not finished with the tweaks yet. That is my guess. But ever since the Gaia/FB connection was severed, lot of people are experiencing this. I never played on FB. Only here. So I am not having those problems.