@Zed
I’ve purchased the theme in 2014, so I have now requested to migrate to the Premium Support, but I still haven’t got access to the support form.
I have a child theme with the hooks required in functions.php suggested at the link I received via email, but if I enable it the whole site breaks spectacularly.
I think some of the code in the functions is obsolete and are no longer compatible with the latest versions of WordPress.
I will wait another couple of days to see if I can open a request on the Support system.
Cheers