Here's a simplified guide to get your A35/A920 Pro ready:
Connect the terminal to power and wait for it to boot up automatically.
Press the green button twice.
Select Wi-Fi settings by tapping on it.
If a password is required, try using 9876, pax9876@@, or PaX2022!
Choose your Wi-Fi network and enter the password. Wait for the connection to establish.
Press the red button.
Press the green button again and select 'Pair'.
Now, you can proceed to complete the setup on the large terminal from step 7.
This should get your terminal up and running.