It is good to hear that the mobile app is updated on your device, vijaymehta24-gma.
This is probably caused by a delay in the app to recognise the recent update. Let's refresh the your data by doing a simple troubleshooting steps. Depending on your device's operating system, the steps might vary a little bit. You can just refer to this article and see the steps: See your latest data in the QuickBooks Online app.
Meanwhile, you might want to review and access your account through a mobile browser. This way, you'll be able to compare if you can add trips manually.
Here's also an article that might be helpful in the future since you're using the Mileage feature through the mobile app:
Keep us posted so we can provide you further assistance in making things work on your end. Have a great day!
