Please bear with me while I'm upgrade this website from Joomla! 3.10 to 4.1.5
There have been some changes to default templates between the two versions of Joomla. I'm slowly learning how to adjust the new layout - but with 2,700+ pages on this website it may take some time.
The most difficult change will be working out how to restore meta keywords to the site. These were used in Joomla 3 to control which banners were shown on which pages. Joomla 4 has removed meta keywords.
Grant