Make sure you are on the latest version of the IXION software. In the options menu click on Software Update and check that you are on the latest version. If the Maestro ask you to update, please do so.
If the text "Turning on WiFi" is shown in the menu "Wireless and network", disconnect the power cable for 10 seconds. The Maestro wil power on when the power cable is connected again.
When the Maestro shows available networks, please enter your WiFi password. Please verify that you have entered the correct password before pressing "connect".
If the problem still persists, try to delete the already saved network. Long press the network and select "Forget Network". Try again to select your desired network and retype the password.