Hey there, Louise! Thanks for following up. The screencast help a lot, so thanks for that as well. 🙂
It’s worth noting that the plugins don’t support legacy versions of browsers. It looks like you’re using Safari 5 and the latest is 8. We typically go back at least a couple of versions, but can’t realistically ensure a completely functional experience across the board, though we strive to optimize for as many browsers and versions as possible.
That said, your site and the demo site do seem to function properly in the latest version of Safari.
I hope this helps clarify things a bit! Thanks again for reaching out. 🙂
Geoff