'View Calendar' link from widget adding "/cats-ids-40" to page URL

This is the latest version of WP and All-in-one, running on a Windows server.

The optional button the widget adds for ‘View Calendar” always adds “/cats-ids-40” to page URL, no matter what page is selected as the calendar page. So instead of: domainname.com/calendar it’s domainname.com/calendar/cats-ids-40.

I’ve rebuilt the permalinks, killed and remade the calendar page, used another unrelated page and even had the plugin auto-generate a calendar page and it still does it.

Any ideas? Thanks!

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