Wi-Fi Protected Setup is the easiest way to connect wireless devices to a wireless network. However, sometimes the “WPS PIN not working” issue may occur due to various reasons. When you connect a printer to your network via WPS setup, the connection may fail if you have entered the incorrect WPS PIN. You can consider the steps that are given below to fix the WPS pin not working issue.
Resetting the printer network settings:
Troubleshoot the router: