Unable to see custom field on admin add listing page

I’m trying to a) add a new field into my listing and b) output the contents of that field into a new tab on the listing detail page

I’ve read up at https://wpgeodirectory.com/docs-v2/places/custom/

I’ve added a new text field and as per the documentation, which says “Every custom field that you add to your Custom Post Type is made available in the Tabs” I’ve found it in the tabs setting and added it to my tabs

I’m expecting that I should now be able to add a listing from the backend, see the new field, enter a value, save the listing and then view the listing and see the field value within the tab.

I cannot see the field on my “new place” form within wordpress, neither can I see the tab on any existing listings, despite giving the field a default value. I’ve even tried setting the field as ‘required’ but it doesn’t show.

What am I doing wrong?