Please make sure that the robot, your smartphone as well as the W-LAN router are in close to each other in order to establish the app connection properly. Also note that the robot can only be connected to 2.4Ghz networks. 5Ghz is not yet supported. Please disable the 5Ghz channel temporarily.
If there are still error messages, please check the W-LAN password for special characters. You can simply set a numeric password for testing purposes - the robot will have no problems with numbers. Please note, only open networks or networks encrypted with WPA2 are supported.