Solved! authenticion error occurred

Solution
An authentication error happens when...

1. You enter the wrong password to the correct WiFi.
2. You enter the correct password (meaning your password) to the wrong WiFi.
3. You enter the wrong password to the wrong WiFi.

Also, some modem's/router's have both 2.4GHz and 5.0 GHz connections. Which don't usually have the same WiFi name and password. So make sure you are trying to connect to the right one.
An authentication error happens when...

1. You enter the wrong password to the correct WiFi.
2. You enter the correct password (meaning your password) to the wrong WiFi.
3. You enter the wrong password to the wrong WiFi.

Also, some modem's/router's have both 2.4GHz and 5.0 GHz connections. Which don't usually have the same WiFi name and password. So make sure you are trying to connect to the right one.
 
Solution