Instagram bio link

Hey guys, I need your help.
Recently I have started my first shopify store.
Also I have created Instagram profile.
When I put a link in instagram bio to one of my products and click it, it doesn't lead to that product, it leads directly to my shopify homepage.

example:

Let's say my store address is www.beststore.com
Address to my product is www.beststore.com/product

I copy/paste address www.beststore.com/product to my bio link, but when I click on it it leads me to www.beststore.com.

How to fix this?