I can't access my customers on my phone app

Thank you for sharing your concern here in the QuickBooks Community, Stephen. Let me assist you in accessing your customer page.

Your QuickBooks Online account and mobile app may not be in sync. We can refresh your app's data to see the latest available information. You can follow these steps on how to do it in different operating systems:

iOS

1. Go to the Settings, then click General.
2. Select iPhone Storage, then tap the QuickBooks Online app.
3. Hit Offload App.

Android

1. Go to the Menu with the three lines (☰), then click More Options with three dots(⋮).
2. Select Settings, then tap Refresh Data.
3. Hit YES to confirm.

These steps will free up the storage without deleting your documents and data. We can uninstall and reinstall your app to start fresh and new.

Moreover, I'm sharing this article to learn more about capturing customer signatures: Capture signatures using the QuickBooks Online app.

If you still have further concerns and questions, please don't hesitate to reply on the thread. Have a great one, and take care.