Thanks for your reply and the fix for the Add-on Tabs for the Page Builder. The heading of this thread explains that the issue is with the Tabs on a Page and the Custom Module. The problem still exists with the module (content does not change when a tab is selected).
However, the Tabs WILL function in the Custom Module if there are separate Tabs on the page, which are not part of the module. To show this, on the site, if you hover over the link “Exercise” a mega menu appears with Tabs and if you select a Tab, the content will NOT change. If I add Tabs to the page, both the tabs on the page and in the mega menu WILL function. Is there a similar fix for the Tabs on a page, to allow the Tabs to function in the Custom Module without having other Tabs on the page?