Hi Keat,
Thanks for writing in!
I’ve checked your site and it seems you are using an old version of Cornerstone, i.e., v1.1.3. Please update it to the latest version, i.e., v1.2.1.
You can find the latest version numbers here: (https://theme.co/changelog/) Then you can compare them to what’s installed on your site.
If you find anything to be out of date, you can review our update guide.
Thank you!