I just tried to send an invoice on the QB app and it will not send. this is the first time its ever happened. does anyone know why this has happened?

Look no further, @userymgray7.

Let's work together to ensure you'll be able to send invoices using your QuickBooks Online (QBO) mobile app. 

When you're experiencing trouble using your QBO app, clearing the cache can do the trick. This process will eliminate historical data and provide you with a clean slate. Here's how:

For Android

1. From your QBO app, select the Menu icon.
2. Next, choose Settings. 
3. Then, select Refresh Data and click Yes.

For iOS

1. Click the Menu option located at the top right.
2. Then, choose Help & Feedback.
3. From there, click Refresh Data and select Refresh.

You can also do this on your phone settings. I'll guide you on how:

Android device

1. Tap your phone's settings and select Apps.
2. From there, look and select the QuickBooks app.
3. Next, Storage and click Clear data.

iOS device

1. Go to your phone's settings, and click Settings.
2. Next, select General and choose iPhone Storage.
3. Look for the QuickBooks app and select Offload App. This will only free up the storage without deleting the documents and data of the app.

Once done, attempt to send the invoice again. If the same happens, I recommend uninstalling and reinstalling the app. 

Additionally, here's a helpful source that can provide you with more information on how the QBO app works as well as those features available:

• Compare mobile app features
• QuickBooks Online app overview

 If you get the same issue can we ask you to try on a browser on your device logging in and sending the invoice that way so we can isolate if this is only happening in the app for you.

I'm just around the corner if you have any other concerns about using your app. Thanks for dropping by. Have a good one.