Are you 100% sure it's an addressable panel? A 15p? This seems very strange that you're not seeing a message every 10s from the panel with panel status. Wiring you verified with another keypad so that doesn't seem suspect unless you have them plugged in incorrectly on the ad2pi itself (make sure all wires are connected including power and ground as well).
IF you continue to not see messages, you can download a beta firmware and enable diagnostic mode
If you would, upload a beta firmware and enter diagnostic mode by issuing a "@48"
Once in diagnostic mode, try to arm and disarm your alarm
Then enter "@00" to exit diagnostic mode
Email a log of this to
ad2usb@support.nutech.com so we can look at it privately with you
Thanks,
Kevin
Not an employee of the company. Just here to help and keep things clean.