Backend ‘Edit’ button not working.

I add my Galleries to pages using the widget.

It adds an image/block on the the page in the backend, that has a blue ‘Edit’ button on it. I did take a screenshot of it, but cannot find a way to add it to this post.

I used to be able to click on that ‘Edit’ button (on pages in the backend) to alter the settings of individual galleries. Now, when I hover the cursor over that edit button, nothing happens.. I can’t click the button to edit gallery settings.

Thank you.

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