Business address has been updated on the QB-Online app, but my old address continues to show on estimates/invoices. How can this be addressed to show new address?

Your thorough troubleshooting approach demonstrates a strong commitment to resolving on how to update your address, kfrr. However, to precisely identify the root cause of your concern and ensure a comprehensive solution, we need to delve deeper into the complexity of your QuickBooks setup.

To do this, we need to employ more advanced diagnostic techniques. I highly recommend you contact our QuickBooks Live Support Team. They do have advanced tools, including screen-sharing sessions, which allow them to provide real-time assistance to narrow down the problem to its core and develop a targeted solution tailored to your specific QuickBooks configuration.

You can get in touch with them by following the steps below:

1. Sign in to your QuickBooks Online (QBO) company using any supported browsers.
2. Select (?) Help in the upper right corner of your screen.
3. Type a question or topic you need to help with, then select Contact a human.

This direct approach will likely lead to a quicker and more efficient resolution of your address update issue, ensuring that you'll have a lasting solution much more quickly than through continued self-troubleshooting. 

Moreover, you can read this page to learn about the availability of the Live Support team so you can choose a time that suits your schedule: Support Hours.

Furthermore, here's an article that you can check if you want to customize your transactions like invoices in QuickBooks Online: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Hoping for a breakthrough in your QuickBooks journey, kfrr. Please know that you can always revisit this thread if you have further questions with regard to managing your invoices in QBO. We'll be right here to support you.