If the network you have logged into isn’t working and/or you want to sign into another one, follow the instructions below with your wireless keypad remote to "forget" the current network and switch to the new one.
Reboot, and before the Shift app loads, press Alt + Ctrl + S.
At the bottom right, Select Settings (this may look like a gear, or you may need to click on the clock in the bottom right corner of the screen).
In the "Network" section, select WiFi.
Find the network you want to forget, then select More > Forget.
Select the network you'd like to connect to and make sure you've checked "automatically connect" if applicable.
Reboot the device, and your regularly scheduled content should resume playing on the new wifi network.