Hi it seems all my invoices and customers have disappeared from my mobile app? Any help would be appreciated Thanks

I'll be here to fix the issue you're currently experiencing now, @userbradley-wallwork.

Cache stored in the app might have caused the unexpected behavior within QuickBooks. You can clear the cache to isolate this issue. Please follow these steps:

iOS:

1. From the Menu ☰, select Help & Feedback.
2. Select Refresh Data.
3. Click Refresh.

Android

1. Tap the Gear icon.
2. Select Refresh Data.
3. And then choose Yes to confirm.

Once done, you can check the invoices and customers to see if the data are now there. If you get the same results, I suggest uninstalling and reinstalling the app.

In addition, you can check which QuickBooks Online mobile app features are supported on mobile devices through this link: Compare mobile app features.

Keep me posted on how this works. I'll keep an eye on your reply. Keep safe, and have a great day!