Chime Pro Making 3 tone repeated alert. Error?

I have searched everywhere, and 100 combinations. No where can I find a simple list of what these sounds mean. My chime pro, I have 4 of them in my home networked to support cameras as extenders, all of a sudden started making this 3 tone repeated noise. Bup bop bup. Not a beep. Not a chime. This dull thudding boop sound with 3 notes that are distinct and different. It will not stop. ALL of them are doing it. No alerts on the app. Nothing on google or chat gpt. Devoid of any means to fix this or understand what it is and why. Extremely upsetting.