You can add the logo by accessing the Invoices or Estimates document and clicking "Add Logo" in the upper right corner to upload the image, Joe.

If you have added the logo already and it isn't displaying, I suggest checking the file size, as exceeding the 1 MB limit could prevent it from showing.
Also, let's troubleshoot potential browser issues affecting the system's functionality by accessing your QuickBooks Online (QBO) account in a private window, as QBO relies on the browser's built-in PDF viewer when previewing these documents. You can use these shortcut keys to access them:
- Safari 11 or newer: ⌘+ Shift + N
- Chrome: Ctrl + Shift + N
- Firefox: Ctrl + Shift + P
- Safari: Command + Shift + N
After you can log in using a private browser, switch back to your regular browser and clear the cache. You can also use another supported browser as an alternative.
Here's a reference guide for customizing your sales forms: Customize invoices and estimates for QuickBooks Sole Trader.
Additionally, you can refer to this article for the process when you decide to proceed with the payment: Record payments in QuickBooks Sole Trader.
Don't hesitate to reach out if you have other questions or concerns about managing preferences in QuickBooks.