Welcome to the QuickBooks Community, @Eslyn. Let's work together to ensure your client can view the invoice details after sending them from QuickBooks Online Accountant (QBOA).
First, let's rule out the possibility of a temporary system issue by sending yourself the invoice and verifying if you encountered the same problem. If so, we can let your client perform browser troubleshooting steps to clear up a misconfigured or corrupted cache that caused the error message.
To do that, allow them to log in to their QuickBooks Self-Employed (QBSE) account in a private window. Please refer to these keyboard shortcuts:
- For Google Chrome browser: Ctrl + Shift + N
- For Mozilla Firefox browser: Ctrl + Shift + P
- For Safari browser: Command + Shift + N
Once resolved, let them return to their regular browser to clear the cache or utilize another compatible one. However, I suggest contacting our customer support team if they still get the error message after performing the necessary troubleshooting options.
In the meantime, you may download the invoice as a PDF and send it manually to your client's email address.
Once paid, record it in QBO fully or partially to ensure your books are accurate and up-to-date.
Let me know whenever you need further assistance with invoices. We'll always be glad to help. Take care and have a good one!