Product attribute photos not changing in 3.20

We have configured a simple product with 4 sizes as product attributes in nopCommerce 3.20 installation, each with its own photo.  The person who configured it sees the photos changing as she chooses different sizes with the radio buttons on the product detail page.

On some pc computers we see the same result, but on others we don't see the photo change when picking different sizes.  Both were tested using latest Chrome version with different results.

It also works on my iPad in both Chrome & Safari.

Any ideas why?

Please show us the site. Can't comment without actually testing the site. :)

This is the site and product:

https://www.ottoenvironmental.com/kane-nursery-feeders-3-hole-6-hole-single-sided

Thanks!

It works fine here on my browser.

Here's what I would suggest you do.

1) Press F12 on Chrome (on the computer where the site won't work properly) to launch the developer tool.
2) Refresh the page.
3) Look at the console and see if you can fine any JS error being recorded there.

I see 4 errors re: insecure google font calls, like so:

Mixed Content: The page at 'https://www.ottoenvironmental.com/kane-nursery-feeders-3-hole-6-hole-single-sided' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Ubuntu'. This request has been blocked; the content must be served over HTTPS.