Hi,
Thank you very much, that worked.
I found both of the issues. On the first URL, there was a problem with the filter, for some reason some post types were still excluded. I have made a ‘fake’ configuration to include both products and product_variations within the filters. It is not visible, since it’s not enabled, but it does the trick.
On the second URL, the override was not enabled, it was set to nothing. I have changed it to ‘custom content’, now it’s working as well.