Go back to the app on the device and navigate back to the projects list.
Tap on the Courier Project which will open the session list page.
Tap on the Start New Session button at the bottom right.
Now fill in some of the data from the project so that it looks like the screen below.
Press the Finish button at the top left
Tap on the Menu button at the top right.
Tap the session so that it has a tick.
Tap on the Send button on the bottom left.
The session will be sent to the server and you can go and take a look at the data.