Hey @Dddenise ! With the Pro becoming seemingly unresponsive at times, this may be an indication of power concerns. I recommend checking the wiring behind the Pro as well as in the chime kit, to ensure all wires are connected properly and are not crossing, or corroded.
The next best step would be to reach out to our support team, at 800-656-1918, for more in depth troubleshooting. I hope this helps! 