I can’t send new invoices to customers from the app I could last wk now I can’t

Thanks for reaching out to us. I'm here to help you rule this out for you to create invoices in the QuickBooks Online app.

First, let's make sure that the app is updated. This ensures that the app has the latest fixes and patches to resolve common issues.  Simply open Google Play or Apple Store (depending on your device). From there, update the app. 

Second, let's clear the app's data to prevent any further issues due to too much cache accumulated. We can start by refreshing your mobile app and device settings. To start, you may follow the steps below:

In the QuickBooks Online app:

1. Android: From More Options ⋮, select Settings and click Refresh Data. Then, choose Yes.
2. iOS: From the Menu ☰, click Help & Feedback and select Refresh Data Then, click Refresh.

In your device Settings:

1. Android -From your phone's settings, select Apps choose the QuickBooks app from the list, and select Storage. Then tap Clear data.
2. iOS - From your phone's settings, select Settings, click on General, and choose iPhone Storage. Select an app that's taking up a lot of space. To free up the storage without deleting the documents and data for the app, select Offload App.

Finally, if the issue persists, you may uninstall and reinstall the application to start fresh.

1. Tap and hold QuickBooks Online on your phone.
2. Drag the app to the Uninstall section.
3. Press Yes to confirm.

Also, please take note of the system requirements of the app to make sure it works smoothly. Here's an article where you can see the list: QuickBooks Online Access For Mobile Devices.

Furthermore, we're adding these articles to help you manage invoice payments, create personalized sales forms, and keep track of your transactions inside QBO:

• Record invoice payments in QuickBooks Online.
• Customise invoices, estimates, and sales receipts in QuickBooks Online.
• Run reports in QuickBooks Online.

Let me know if you have other questions about QuickBooks. I'm always free to help you whenever you need my assistance. Take care and stay safe always!