All invoices show on the pc when I login But on the app certain customers show balance of …. When I click on pay some invoices are not showing to apply WHY

We'll have to refresh the app data for the missing invoices to show on your mobile app, lynnaccounts.

In addition to the information provided by James Read, the stored cache can cause unusual responses in the app. Let's clear the app data of your mobile device to see the latest available information in your QuickBooks Online (QBO) app.

For Android users:

1. On your mobile device, select Menu ☰ and tap More Options ⋮.
2. Click the Settings option and Refresh Data.
3. Tap YES to confirm the action.

Next, open your QBO again and check your invoices. If the issue persists, uninstall and reinstall the app to start fresh. On your mobile phone, drag the app to the Uninstall section and click Yes to confirm the action. See the following article for detailed instructions to install the app: How to download the QuickBooks Online mobile app.

If you’re using an iOS device, we have ongoing issues with missing data on the mobile app. We recommend contacting our QuickBooks Online (QBO) Care team to subscribe to the notification list to receive email updates.

In the meantime, log in to QBO via a browser using a laptop or computer and continue performing your accounting tasks from there. Additionally, you can refer to these resources for help with resolving mobile app issues:

• Fix common errors in the QuickBooks Online mobile app for Android
• QuickBooks Online access for mobile devices

Moreover, these articles cover topics that give users a better overview of their sales transactions, instructions for managing invoices, and other customer-related tasks:

• View sales transactions in QuickBooks Online
• Topics about your company's income and customers
  
  

If you have concerns about invoices and other sales-related transactions, let me know in the comments section below. We’ll always be here to assist you further.