[Smush Pro] CDN not picking up all images

There are a few images on my site that Smush appears to not be able to serve from its CDN. Some are using a data- attribute and I understand this will be improved in version 3.4

However, some others that are not being picked up by the CDN do have their URLS in the HTML, but with protocol-relative URLs in owl-carousel elements (theme feature). It’s these ones that appear to cause difficulty.

Can you please have a look at my pages to see if anything can be done to help Smush CDN recognize these images so they can be served from the CDN?