Hi there torsan-gta-gmail,
Thanks for reaching out about your mileage. QuickBooks Online is a great tool able to help you keep track of sales and expenses so you know the profitability of your business. I can point you in the right direction for help with mileage not working.
One step that can help resolve issues with mileage not tracking on the phone would be to remove the app from your device, then download it once more from your app store.
If you have any other questions, or need further assistance, feel free to reach out here.
