Motorola DP1400 Help

Hello, good afternoon. My name is Nandy, and I would like to inquire about the Motorola DP1400.

I purchased two of these devices secondhand from an online store as a gift for my nephew. He just passed his amateur radio license exam and can operate this type of device. The problem is that when we connect them to MOTOTRBO CPS 2.0 to configure the channels, they ask for a password. I have contacted the store that sold them to me, but they have no information on this.

Would you be so kind as to give me the steps to follow to solve this problem. Best regards, and thank you very much.