First check in the settings of your device if your GPS is turned on and make sure Bikemap is allowed to "Always" use your current location.
Log in to your account to save your recorded route. You will find the login window in the settings and under "My routes" in the navigation bar, where you can also create a new account.
Then select "Track route" in the navigation bar. On the tracking screen, hit play. The app will start recording your route including time, speed, distance and inclination. Ride your route!
You can also pause and continue while recording your route. When you finish your route, tap stop and save. Add a title and a category to your route. Tap on save to add your route to your account – it will now be available on all your devices.