If you are not able to mirror the screen from desktop application, then Please try out the following steps for resolution:-
1) Your Teewe device and your PC/laptop should be connected to the same Wi-Fi network.
2) Wi-Fi signal strength should be strong on both your PC and Teewe.
3) Kindly ensure that Java platform SE Binary has access through firewall.
4) Kindly ensure your Wi-Fi router is configured according to the settings mentioned in the link below-
http://teewe.in/wifisettings