Hi, I also have this issue! Have tried the code injections above to no avail 🙂
My store: https://www.staay.co/products
I have nine products I want to hide, and I've put "hide-product" in tags for all of them. Maybe you don't need links, but here they are just in case: https://www.staay.co/products/p/nmn-3months https://www.staay.co/products/p/nmn-1andhalfmonths https://www.staay.co/products/p/nmn-1month https://www.staay.co/products/p/curcumin-3months https://www.staay.co/products/p/curcumin-1andhalfmonths https://www.staay.co/products/p/curcumin-1month https://www.staay.co/products/p/krilloil-3months https://www.staay.co/products/p/krilloil-1andhalfmonths https://www.staay.co/products/p/krilloil-1month
Thanks so much!