"Invoices" have disappeared from my shortcuts.

Hello, Eric.

There's a big chance that you'll encounter errors like this when using the Quickbooks Online mobile app. Rest assured, I have the steps that we can perform to resolve this issue. 

Allow me to guide you through clearing the app's data:

1. Open your device, then go to Settings.
2. Choose apps (varies by device).
3. Click the QuickBooks app from the list, then select Storage.
4. Hit Clear Data.

Moreover, you can check this link to learn how to make quick changes to invoice templates: Customize invoices on the QuickBooks Online mobile app.

Please don't hesitate to let me know if I can be of additional assistance if you need more help with your invoice or any QuickBooks-related queries. Keep safe.