Let me sort things out for you, @nypolyphony.
To start, let's perform some steps to fix this. There are times that the browser is full of frequently accessed pages, thus causing some unusual responses. Let's log in to your account using a private browser.
Here's how:
- Ctrl + Shift + N for Google Chrome
- Ctrl + Shift + P for Mozilla Firefox and Microsoft Edge
- Command + Shift + N for Safari
Once logged in, try to change the address in your Intuit account. If it works, go back to your default browser and clear its cache and cookies to refresh the system. If the issue persists, I'd recommend using other supported browsers in accessing the tab.
To guide you more in updating contact information for Intuit, feel free to check out this article: Update your user ID, phone number, and contact information for Intuit.
Let me know how it goes. I'm always here to guide you with managing contact information. Have a great day.