Thanks for visiting the Community, a-mitchell.
I can share some insights about the address on the invoice.
If you're referring to the Shipping to box of an invoice, QuickBooks Online pulls the address from the Customer information screen. Here's how to check it:
However, if you're trying to specify a location, you can review it by following the steps below:
The screenshots show these steps as well.
These resources should get you in the right direction.
Please let me know how that works for you. If your situation doesn't match what is being discussed above, I would appreciate if you could provide more details. Have a good day.