Each Geo Popup service you create will come with its own JavaScript code.
This piece of JavaScript code needs to be placed as a new tool in your WIX website's Tracking & Analytics settings.
Steps:
Go to Settings in your site's dashboard
Click the Tracking & Analytics tab under Advanced Settings
Click + New Tool and select Custom
Paste the code provided
Choose if you need to run the redirect on all pages or selected pages
Ensure you select Load code on each new page
Ensure you select Place code in > Body - End
Click Apply