Just in the last few weeks, I have started having the same problem. Was there a firmware update that broke something? Every few days I see my doorbell is disconnected from wireless. The only thing that will make it reconnect is to cycle the power. I’ve had this 2-3 years with little to no issues. Now it’s at least weekly that I have to reset the power.
I also cannot find where there is any kind of diagnostic log that will allow me to see if the doorbell was having any issues before it disconnected. Were there wifi issues? power issues? something else? When I am connected, power is good and wifi is good.