By default, Chrome blocks GrowerIQ from communicating with your Zebra printer. Follow these steps to allow printer access.
Copy the address shown below.
chrome://settings/content/insecureContent
In a new tab in Google Chrome, paste that address into the address bar (the text field at the top). Press Enter on the keyboard, and you will be taken to a page with the heading Insecure content.
On that page, next to Allowed to show insecure content, click Add. A modal appears. Enter the URL of your production site and click Add. This allows your production environment to access the printer.