Rel Canonical links broken

My location pages seem ok, but I’m having a similar problem with canonical URLs on category pages.

So https://annarborwithkids.com/events/categories/age-range/preschoolers/
is canonical to https://annarborwithkids.com/events/open-swim-7-2019-10-16
Even the open graph URL and title are based on the canonical URL.

Digging into a few category pages, it seems that the URL it is pulling the information from is the most recent past event in that category.

It happens both on a category like:
https://annarborwithkids.com/events/categories/age-range/preschoolers/
which is a hierarchical child category and where I have customized the description and featured image.
and https://annarborwithkids.com/events/categories/crafts-2/
which is a top level category where I have not customized the description or image.