JobNimbus not loading on Safari browser

When using the Safari browser on Mac, iOS iPad or Apple device, after login I'm seeing a spinning wheel, or I can't load my contacts, or can't see my calendar.

JobNimbus requires the latest version of Safari for the best Safari performance. Check your MacOS or iOS version and ensure you have upgraded to the most current version. This will also update Safari to the latest versions and resolve these related JobNimbus loading errors.