HTTPS issue

Hi there,

I found an excellent support response to help me achieve the design I’m looking for: https://ww.wp.xz.cn/support/topic/open-gallery-with-html-link-instead-of-shortcode/

The problem is that I can only get the solution to work if I remove the ‘s’ from the https:// link of the ‘first image in the gallery’. Thus, when you click on the gallery it appears as ‘not secure’ in the browser.

Do you have any suggestions for fixes?

Much appreciated, and great work on the plugin.
Jack

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