How to enable Instagram Photos?
Go to Appearance > Customize > WooCommerce > Single Product > Show Instagram Photos and check this option.
How to setup Instagram Photos for a product?
Step 1: Go here to generate your Instagram Access Token.
Step 2: Go to Appearance > Customize > WooCommerce > Single Product > Access Token and enter your Access Token.
Step 3. Edit a product > Product data > Instagram tab > Hashtag and enter the hashtag you want to show.
Update the product then view it. Here is what a instagram product looks like.