One day, my customer told me that after he clicked "√" on the screen, the Digiprog3 screen stayed on one same page like the picture. How to solve this?

If you have this problem, please check from 3 parts:
1. You've changed the password.
2. You input the wrong password.
3. You input the the right password, but click at the wrong option at the same time. You will need one stylus.