If after changing the Soberlive sensor and switching on the unit, the "Device error" notification comes up, click on OK to exit.
Then, log in using your Admin / Manager ID and Pin.
Note that your Admin / Manager ID should be your email address and password used to sign in to the Hub on your computer.
If you are provided with the option to take a test instead of being shown the admin panel, then the ID you've used to log in may not be assigned as the manager for that device / location (i.e. the Soberlive is detecting you as a normal user).
If you can't seem to move on to the next step even after logging in with your admin email address (i.e. it keeps going back to "Device Error"), check the following:
1) Check that the Soberlive is connected to the internet
2) Check that the email address is assigned correctly as the MANAGER for that location (you need to log in to the Hub on your computer, then go to Locations to check / assign the manager).
3) Check that the Soberlive unit (based on its serial number) is assigned as a device under that same location.
4) Once done, go back to the Soberlive device and DOUBLE TAP the bottom right corner of the tablet / screen to SYNC the latest updates from the Hub to the device.
Then, log in to the Soberlive device again using your manager login and password. Continue with the steps from the user manual to complete the sensor swap.