I’ve installed and used the system for about 10 days without any issues and many reconfiguration (plugging/unplugging CTs) without any ill effects. The only issue I had was weak wifi signal that I overcame by installing an additional AP.
As an EE formerly involved in developing embedded system, I am impressed with what you did with the chip (ESP8266) that I am not especially in love with for many unrelated reasons. I saw your exploring ESP32. In my experinence of about a year ago, ESP32 wireless stack was less robust to wifi disconnects/reconnects that ESP8266, but they may have improved it meanwhile.
Thanks for the great product.