On the QBO app on my phone, I clicked the text msg symbol next to a customer's phone number, chose the wrong msg app and now it won't send texts. How to fix?

I've got some steps to fix this unusual behavior in your QuickBooks Online (QBO) App, Service.

There are times performance issues in the app can be caused by a full or damaged browser's cache data. When this happens, it prevents you from sending texts when clicking the Text message symbol.

To fix this, let's try resetting the app data to clear the cache and refresh it into its default state.

Here's how:

1. Click the Help menu. 
2. Click Reset App Data.
3. Close the app when the process completed.
4. Be sure to right-click the app and Run as Administrator when re-opening. 

Then, try sending texts again.

If the same thing happens, try uninstalling/reinstall the QBO App. This is to ensure you get the most recent version of the application.

Just follow the detailed steps in this article: QuickBooks App for Windows and Mac: General support. Then, go to How do I uninstall the app? and How do I install the app? section. 

The QBO App is always in sync with QBO on the web. Just access your account on the web if you need to run business transactions right away. 

For more insights about the QuickBooks Mobile App, check out these articles: 

• QuickBooks Online Mobile app FAQ.
• Compare mobile app features.

That should point you out in the right direction. I'm just one click away if you need anything else in QBO. Assistance is just a post away. Have a great day ahead.

I did everything you suggested and nothing worked. I cleared the app data, cleared the cache, deleted the app, reinstalled the app, synced the data, and when I press the message key I get a quick oval below that says "Could not start conversation." I also located my default messaging app, cleared defaults, then reset it as the default. I also rebooted my phone. 

Thanks for getting back to us, @Service.

Since the steps provided by my colleague didn't resolve the problem, I'd suggest reaching out to our Customer Care Team. Our representatives can provide additional troubleshooting and can run some diagnosis to identify this unexpected behavior.

Here's how:

1. Go to Help.
2. Click on Contact Us.
3. Enter your questions or concerns and click on Let's talk.
4. Choose either Start a chat or Get a callback.

Due to the ongoing pandemic, we have limited staffing and have reduced our support hours to 6 AM-6 PM PT Monday-Friday. For more details about our support availability, refer to this article: Contact Support. 

You may want to visit our QuickBooks Community help website for reference in case you need tips and related articles in the future: Self-help. 

Don't hesitate to comment below if you have other questions. We're always here to help. Have a great day.