Slide in x button not working.

Hi,

I asked a the question below two days ago, got an initial response from Michael, but have then not heard anything back, so think it must have got lost!

On Slide In, the 'x' button isn't working to allow users to manually close down the slider.

I only started using slide in this week.
I'm using the latest version of the grapheme theme,
This happened regardless of the theme (2014 included)
It also happens if all but the slide in plugin are deactivated.
All that happens when the x is clicked is the site is jumped to the top of the page (behind the slider).
I have generated a site access token if you need to take a look.

Also- and this may be unrelated, but I can't seem to make a slide in appear on an individual post page. Any ideas?

Any ideas?

Thanks

Tim