Humans can be forgetful; it happens to everyone. So, in case you ever forget your withdrawal pin, it's a quick fix.
Tap on Profile at the bottom of your Home Screen.
Select SECURITY SETTINGS.
Click on RESET TRANSACTION PIN.
Enter your password when prompted.
Choose Receive OTP.
You'll then receive a reset code sent to your registered email address. Simply enter the code and set a new PIN.
Easy peasy!