If you are trying that How to change PIN on Cash App .Here ,This is a right place .Similarly , the Cash App PIN used for sending money is the same one used for withdrawing cash at an ATM using cash app card's , the Cash app PIN on the cash app PIN on the cash app account and the cash app card are the same .Additionally, if you withdraw money from an ATM, you have to use the same PIN you use to validate a transaction. If any problem related to cash app account then you can contact cash app support team.
Read More ;
Why is my Cash App PIN not working