If you don't see the shipping address, we can go back to a regular browser and clear its cache. Once a cache is piled up, it can be the reason for the unanticipated issues on the pages we've opened like QuickBooks.
If you still get the same thing, I would recommend reaching out to our Customer Support team. An agent will take a look at your account and investigate this further. I'll show you how:
From the ? Help icon, click Contact Us.
Enter The shipping information keeps populating when I create an invoice.
Click Let's talk.
Select either Message an Agent or Get a callback.
In case you want your customers to pay their invoices online, you can add a PayNow button. Here's an article that has the detailed information about this feature: Add a Pay Now button.
If you still have other concerns, please let me know. I'm here to help you!