Video Doorbell Constantly Going offline

I have 2 Video Doorbell Pro's wired--one on the front door and one on the side door.I have installed a 24/40V transformer to help power both. I have them wired through a mechanical chime.Long story is the side door works all the time while the front door almost never works. I can reset it and have it powered on but then it will lose power/connectivity within hours (if not sooner). When the front is working the device health looks great and then will just cut off.Help!