Cannot edit gallery

Hello,

I am trying to use the slider for one of our client websites; however, sometime after creating and publishing the slider onto the site, when we go back into the slider to make edits, clicking the “edit gallery” button doesn’t seem to work. It appears as though it’s redirecting back to the page we’re on because the url adds a # to the end of it.

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