When I open the app my customers have disappeared and I can't see previous activity?

Hello, @sallyleskys-hotm.

Welcome, and thanks for visiting the Community. I can share information about customers disappearing in your QuickBooks Online (QBO) app.

There are times that the app's cache affects QBO's performance. We can do troubleshooting steps to rule out any cache-related issues.

Let's clear the app's cache by following these steps:

1. Go to the phone's settings, then select Apps.
2. Locate the QuickBooks Online app, and then click Clear Data and Cache.

For iOS:

1. Tap Settings.
2. Scroll down to General.
3. Select Storage and iCloud Usage.
4. Tap Manage Storage.
5. Tap the QuickBooks app.

If you've installed the QuickBooks App for Windows and Mac, we can do the Reset App Data.

Here's how:

1. Select Help.
2. Choose Reset App Data.

Once done, reopen your app again to double-check. If the issue persists, you can also uninstall, then reinstall the application.

For more tips and other resources, I recommend visiting our website for future reference: QBO self-help articles.

I'm only a few clicks away if you have additional questions about customers or anything else QuickBooks. I'll be here to answer them. Keep safe.