anchor menu in product page makes problems

Hellow friend,
I built a store with realted product and reviews with Wix Code,
now, I’ve placed an anchor menu,
but when I click on it to navigate in the page, the URL changes…

for example:
this is the URL of my product:
https://www.eleflayla.com/product-page/sound-sleep-herbal-infusion

and after I click on the anchor menu, the URL becomes:
https://www.eleflayla.com/product-page/

and then it doesnt shows the related product, nor the reviews…

do you know if there is technical solution for this? or should I not use anchor menus in dynamic pages ?
thank you in advance