Full Category path (SEO)

For SEO Purposes I would like my OpenCart 2.2.0.0 version to show the full category path.

Now it shows https://www.mydomain.com/category/

But sub categories are not shown, not in the URL bar and not in the breadcrumb. How can I change my config or seo_url.php so the full path will be shown like below?

https://www.mydomain.com/category/subcategory/

Thanks

I have found the issue on this one. OpenCart by default uses the full path, so that's good. The theme I have used has the Mega Menu installed. This menu cuts the path and make a direct link to a 2nd level category.

I have fixed the issue by altering the files of the mega menu module in order to use the full path. This has solved my issue.