Google Structured data tool

Hi, I thought it best to leave a message as I have spent a number of hours trying to get the jobs on WP Job manager to work with googles job posting guidelines but without much luck.
https://developers.google.com/search/docs/data-types/job-posting#guidelines

I seem to be stuck on postalCode, streetAddress & baseSalary all other custom and built in fields work

for instance the first one postalCode or geolocation_postcode are not showing on the structured data testing tool

Here is the screen shot of custom code section and the error of the structure test.

Can anyone guide me what I need to do to fix this

The page I need help with: [log in to see the link]