Hi Iain,

still same issue. You had not properly routed Joomla articles. When you have articles not routed in Joomla links are not good, everything must be routed to a menu item.
I've configured it properly using your already existing Hidden Menu. Always learn to do this in Joomla.

If you have Joomla articles not properly routed the result is having wrong links including 'component/content' and '?Itemid=xxx' . When you have articles not properly routed in Joomla links are not good and metadata doesn't match, everything must be properly configured and routed to a menu item.

Rework your Joomla menus in order to have correct SEF links or exclude from the sitemap orphan links with 'component/content' and '?Itemid=xxx'

PS: i asked to email me please

Regards
John