I had a consulting service we use look into the issue and they tracked it down to being an issue with your File Away plugin and the uBillboard plugin using the same variable for security checking. Would it be possible for you to change that to avoid future conflicts?
I’m not getting any obvious javascript errors (as in error messages on the page or in a pop-up). I’m not really seeing any javascript errors in the console, but it’s also not something I generally have to use for my website.