Incorrect password

Your router knows absolutely, positively what its password is. If it says the password is incorrect, either it is incorrect or your router has Access Control (AKA MAC filtering) enabled and does not recognize your phone. Go to Settings/Wi-Fi, tap on the i next to the network name and turn off Private Wi-Fi Address. That MIGHT fix it. If not you will have to log in to the router’s control console and either disable Access Control or add your phone’s Wi-Fi address to the allowed device list. While you are there you can verify the router’s password.

Please log into the router and recheck the password for the SSID you have chosen.