A student can connect up to 2 devices to Wintec Free Wifi (with their username and password).

If you want to remove the device(s) connected, you can go to wireless.wintec.ac.nz and login with your username and password.

(To connect to this site, you will require Internet access). 

Once you are logged in, toggle Remove and click on Update. 

This site cannot be accessed from either of the two devices you have listed. Accessing wireless.wintec.ac.nz from a Wintec computer or your home PC should work with no issues.