QuickBooks Online (QBO) displays broken or incomplete pages due to browser instability or data overload, Christina.
To determine if this is a browser-related issue, let's perform some troubleshooting steps. You can start by signing into QuickBooks Online using a supported browser and clearing your browser's cache.
Next, you'll want to restart your browser and log back into QBO. Check whether the Receipt tab under the Transactions menu is displaying correctly as expected.
I'll also share this article in case you want to personalise your sales form in QBO: Customize invoices, estimates, and sales receipts.
Feel free to reply to this post if you need further assistance.