The home page uses SPA navigation, so standard analytics tracking doesn’t work. For SPA, you need to call analytics calls when you navigate, see article below
Is it possible for you to add support for this please? Seems like a simple thing to attach handler to sidebar navigation links, and if ga is defined on page invoke it with correct parameters. Heads up, instead of “ga” it’s “__gatracker” when using Google Analytics for WordPress by MonsterInsights as they decided to rename it for whatever reason, so I would check for both.