I am on the map update page now. Perhaps it is fixed.
I started at jaguarshop.here.com, then logged into the Route Planner app.
Clicked on the upper right link for Maps and Services: https://jaguarshop.here.com/web/WFS/HA-JaguarNA-Site/en_US/-/USD/ViewWebCompanion-ProductList
Clicked on the "get latest version" button for North America Map + Services Subscription - 3 Years
My VIN is displayed and the button to "Download Map" for version Latest version available:08.030.0096.0157 is displayed.
I didn't try the download as I'm not at my home computer with the downloader app installed.
I just did a google search for "Jaguar map update," went to site, logged in (https://jaguarshop.here.com), went to in control pro, map update, and started downloading. It all works. I am on Safari on MacOS.