My electrician installed a 3-way dimmer kit for some kitchen lights about 1.5 months ago and they worked fine. Today he flipped the breaker so he could wire up a different set of lights and when he turn the breaker on, the switches no longer worked. When I opened the app it showed that they were not receiving power (or I wasn't able to use them via the app). When he attaches a different switch the lights work, so he assumes that the switch broke. Since he didn't touch the wiring or do anything to the switches other than flip the breaker, is there anything else he can do to get it to work, or is the switch broken and we need to just get a new set?