Your password should be the same as your fuelrats.com password.
if you are sure you entered your password correctly but cannot identify, check to see if your password contains spaces or special characters. IRC does not allow certain characters in passwords.
If you cannot identify, consider resetting your password with the help of This Link as a last resort.
Option 3: Manually identifying on any IRC client
Step 1: Use /nick NICK to change to a registered nickname
Step 2: Switch to the FuelRats server tab and identify
If you still need help identifying on IRC, ask #ratchat!