Why am I not allowed to update my shipping address for TurboTaxDeluxe CD shipments?

I can enter the new data but the save button is disabled. I spent 45 minutes on the phone with a representative and she supposedly was able to update it. However, when I received a confirmation email FROM Intuit, it showed an outdated shipping address that I stopped using 5 years ago. When I log into my TurboTax Advantage account, it also still shows the WRONG shipping address. So I had to call Intuit back and waste another 30 minutes! This agent said her screen showed the updated address but could not explain why the email showed the wrong address. She suggested installing the data harvesting malware called Google Chrome. I've tried using Safari, Brave, Firefox, Opera, and Vivaldi with the same disabled button on all of them

 

I'm beginning to think this is part of Intuit's plan to discourage MacOS users.