Category Colors plugin not applying to the appropriate calendar

I’ve tried this plug-in, but for whatever reason, it does not apply to the calendar on my website.

Here is the calendar on our website: https://oahumpo.org/calendar/

But here is that calendar that the plugin is applied to: https://oahumpo.org/event2/

I’m not sure why I have two calendars and I am not sure how to apply the colored categories to the appropriate calendar. Any help on this matter is appreciated. Thank you!

I can access the second calendar by clicking “Events > View Calendar,” on the top toolbar on the page while logged onto WordPress.

The page I need help with: [log in to see the link]