The mileage tracker isn’t showing up on the app after the iPhone update, how do I find it to use on my phone now?

I appreciate you for alerting us of this issue, Kodi9509. It is already reported to our engineers. Let me share some information.
 

Some of our users are also experiencing the same issue. They're unable to see the mileage tracker after updating the app on their iPhones. 
 

While we're waiting for a fix, I suggest reaching out to our customer care support. We're taking notes of the users that are affected by the issue. 

In the meantime, you may want to add the trip manually using QuickBooks Online on the web. This way, you can still record and categorize your mileage.

If you have other concerns, don't hesitate to reach out to us again. We're right here to help you. Keep safe!