1. Go to Installation page in-app and you will see a dropdown of all the themes installed on your store.
2. Now check the status of the snippet under the dropdown, whether it's installed or not.
3. If its installed then click on the Uninstall button and wait for it to uninstall the code/snippet from the selected theme.
4. Now click on Install button and wait for it to Install the code/snippet to be installed in the selected theme.
5. That's it Open the product page again and reload the page.