Did you set the page that has the main shortcode for the core plugin in the core plugin settings? If you did not set a page with the main shortcode on it, then the “View & Signup Link” doesn’t know where to go, so you will stay on the same page. It needs that page in your main plugin settings in order to get the permalink for it from WordPress.
And, yes, Ongoing events don’t show in the calendar as they have no specific date… otherwise, they would show on every single day and clutter up the calendar. You can always add some text above the calendar with links to those specific events (linking back to the view & signup page for that particular sheet for the main plugin).