Thanks for letting us know about the issue with the preview tab not functioning after upgrading your QuickBooks app, @ckirillas .
Before we proceed, may I know what specific error you are encountering when trying to preview the invoice? If possible, sending a screenshot of the issue would be very helpful, as it will give me a clearer understanding and allow me to provide more accurate assistance.
For troubleshooting steps, I suggest logging out and logging in to your QuickBooks Mobile app to help with minor glitches. Also, uninstalling and reinstalling the app ensures you’re using the latest version and clears any lingering issues from the upgrade.
If the problem continues, I recommend accessing your QuickBooks Online account through a supported browser like Google Chrome, Microsoft Edge, or Firefox. These browsers are optimized for QuickBooks and can act as a reliable workaround while resolving the issue with the app.
For more information on accessing QuickBooks Online through a supported browser, here are the articles as your guidelines: QuickBooks Online access for mobile devices.
If you need further clarification, let us know below. We're still here to help.
