To connect your wifi on kodi krypton:
First make sure you are in the front page, this page is the one that has the on/off switch on top left corner
with the navigation button goto to addons and click on it
now your are on the addons page, navigate to android addons and click on it
now you are on android apps page, navigate to settings and click on it
goto wifi and click on it, connect to your wifi id, enter your password, and click return, navigate to connect and click on it, finally click return several times until your back to your main page.
If you are not able to make your box function properly is because you are not connected, try all the steps before again.