can I somehow get my old version back on my phone ? the new version doesn't add the tax on the products and there's no place to turn the tax on or off .

Switching back to the old interface is not available, Noah. 

However, we recommend clearing your QuickBooks mobile app data, as this often resolves common issues like crashes, login failures, syncing problems, and update errors on both iPhone and Android devices. 

We can also assist with troubleshooting based on your device to ensure smooth functionality. Issues may occur due to settings, system glitch, or unavailable feature. Troubleshooting helps identify the problem for seamless operation. Below is a step-by-step guide for iOS and Android users: 

For iOS:
 

1. Tap Settings, then General.
2. Select iPhone Storage, click the QuickBooks Online app.
3. Press Offload App.

Android:

1. Go to Menu and select More Options.
2. Click Settings, then Refresh Data.
3. Tap YES to confirm.

In the meantime, you can use a mobile browser to enter your invoice and select the correct sales tax. For further assistance, we recommend contacting our live support team to review this issue. They have the tools to review this matter, allowing you can get back to tracking and categorizing your drives seamlessly.
 

If you need anything else, feel free to reply here. We’re here to help.