Conflict with plugin.

Hi

I started using the plugin as for some reason, my console states an image is insecure, event though in my media library it’s https. I added the plugin, but since the recent (last) update, it has conflicted with my Printful plugin.
Something that is listed in the

Capture
Everything on the page, from the header to the footer:
capture the whole page and fix scripts, style sheets, and other resources
excludes Ajax calls, to prevent some compatibility and performance problems

section or below is affecting the syncing ability of the printful plugin. Now all I need is the images to be secured, but any option above doesn’t manage to do this.
Can you advise or help on the matter?

Thanks in advance

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