Chime Pro (1st Gen) doesn't make sound at midnight

I have 2x Spotlight cam that connects to 2x Chime Pro but I forgot since when but from midnight till morning, when Spotlight cam detect motion, my phone receive notification but both 2x Chime Pro do not make sound. (during the day it make sound) I checked all settings on app but I could not figure it out. Cam: there is no device schedules, no snoozeChime: no snoozeI spoke to Tech guy but he just asked me to do factory reset for both Chime Pro and monitor if it is still same or not. If one chime does not work and I can understand but both are suddenly don't make sound from midnight till morning. Anyone had same issue? Any advise? If I can fix it rather than factory rest that would be great. Thanks