If you are not able to scan for Teewe, Please try out the following steps for resolution -
a. Restart your Wi-Fi router. Your network may be clogged.
b. Restart Teewe.
c. Make sure your Wi-Fi router is configured according to the settings mentioned in the link below- http://teewe.in/wifisettings.
d. Re-scan for Teewe device and connect to it.