Hi Allan,
I’ve had a look into this and the issue isn’t with the plugin, the issue is actually with the way your theme is styling those breadcrumbs.
If you have a look at this page on your site, you can see that every breadcrumb is a link, except for the very last one.
If you look at this screenshot where I’m using the browser dev tools, you can see how the styling is on the link within that breadcrumb list item.
Now, if you have a look at the page you’re referring to, you can see only the first crumb has a link and the last two crumbs don’t. My plugin doesn’t control what items have links and what items don’t. That’s completely up to WooCoommerce.
If we take a look at this screenshot for this page, you can see that there’s no link within the list item, and you can see how this crumb isn’t styled the same as the other page.
My plugin doesn’t add any styles for the breadcrumbs, that’s up to your theme to do. Your site is displaying the breadcrumbs differently to how WooCommerce displays them by default, so you’ll need to tweak your styles so that crumbs on these attribute pages, display correctly.