"Calendar" button ("View all events") leads to wrong page, not the calendar page

From a single event page, the Calendar button leads to a page on our site that has never been set as the Calendar page. It does have an ai1EC shortcode with a filter, but the single event isn’t even in the category of events displayed on that page.

Single event page w/ this behavior: https://jacksondems.com/event/primary-election-u-s-representative/

Actual page set as the Calendar page: https://jacksondems.com/sample-page/

Strangely, the Calendar button in the widget on our home page DOES point to the correct Calendar page (though it isn’t working).

Have tested for plugin/theme conflicts, and all the settings I know to adjust.

https://www.ads-software.com/plugins/all-in-one-event-calendar/