Site logo doesn’t show when clicking site link from Facebook app

I have actually had this problem with the Sensible theme and also Flash by ThemeGrill. I have tried searching forums and can’t seem to find anything about it.

When you click on the link to my website from Facebook ON A PHONE, the logo doesn’t show up. With Sensible, it shows just the site title/name instead. This doesn’t happen if you visit the site in your web browser on a phone, or if clicking through from Facebook on a computer. But since I know many people only use their phones, and I expect traffic to come from Facebook, I want it to display correctly.

Can anyone help?
Thank you.

The page I need help with: [log in to see the link]