The QuickBooks system may occasionally exhibit unusual behavior due to synchronization or latency issues, which is a possible cause of your app's damaged data, Stuart. Clearing the application's data can be an effective solution to troubleshoot these errors. Here are the steps to take:
For Android:
- From the Menu, tap More options ⋮.
- Hit Settings and Refresh Data.
- After that, select Yes to confirm.
Once done, try sending invoices again. If the issue persists, uninstall and reinstall the app.
If you're using the iOS version, I recommend contacting our live support team. Our representative has the tools to check your account, find the cause of the invoice issue, and provide a resolution.
Check this article to learn how to send invoices, track payments, and manage your cash flow on the go: Manage invoices and payments with the QuickBooks mobile app.
If you have more questions about invoices in QBO, don't hesitate to respond or post in this forum.