Plug the controller into the laptop with a USB cable, click Connect over USB, then enter the Wi-Fi details in Step 2.
The device restarts after saving and briefly disconnects from USB — that's normal. It then joins the network. Reconnect over USB and its details appears automatically in Step 3.
After Wi-Fi details are auto detected, click on Final Save button, if not auto detected, then click on Detect again button. If Issue persits, then contact vendor.
This step must be completed. Until the details are saved, leaving this page will warn that setup is incomplete.