I updated my mailing address and billing address so why do my invoices still show the old address?

Hello there, @don8.

You can change your company address in the Edit Work Info section. Let me guide you how.

1. Click Invoices from the left navigation panel.
2. Select Create Invoices. 
3. Click Edit Work Info at the bottom. 
4. Enter the new address in the Your work info page.
5. Hit Save.

Once done, you can now create invoices with the updated address.

Don't hesitate to drop me a comment below if you have any other questions. Have a nice day!