I had a look at your listings and the source code:
I only found one “http” link. That’s the link to your eBay store that you entered (“Cathy’s Clothing and Collectables”).
Switiching to Editor mode and changing the “http:” to “https:” should do the trick. Make en entire revise of your listing afterwards.
Do you already know the “How to make your listings ready for eBay’s new policies” page here?: