I’ve recently updated my iPhone to I OS 14 the QuickBooks app does not work. I have tried reinstalling several times with may restarts. Can anyone help?

Welcome and thanks for posting in the Community, @mark189.

Since the issue persists after uninstalling and reinstalling your QuickBooks Online (QBO) Mobile app, I highly suggest contacting our Phone Support team. They're able to pull your account in a secure environment using their screen-sharing (remote access) tool and check the root cause of this odd behavior. They can also perform other steps to help fix this for you.

Here's how to reach them:

1. In QBO, click the Help menu at the top right.
2. Select Contact Us in the drop-down to connect with our live support.

I'll also add this article for more troubleshooting steps on fixing issues with the QBO app: QuickBooks App for Windows and Mac: General support.

Please let me know how it goes or if you have any other issues or concerns. I want to make sure everything is taken care of for you. I'm always here to help. Have a good one!