I've been starting to get some frustrating issues keeping some tp-link smart plugs connected to my network.   They will work for days and then the smart plug will be unavailable.   I'll reset the power on it and the lights will blink green forever or sometime blink red forever.    I'll remove the device from KASA app and try to readd them... ill get thru the device setup and the last part is to add the device to my network and it will fail after some minutes.   "Unable to connect to your Wi-Fi Network.".    I have at least 40 other devices connected to my network and use it daily for work.   (Google nest products, smart plugs, gaming PCs, laptops, phones, etc...)

I have about 10 or so tp-link smart plugs on my network that all work via the KASA App.

I've done a factory reset on this EP-40.   I still can't connect it to the network.

The plug I am trying to configure now is a EP-40 that is maybe 1.5 years old.    I think...as I have a few other EP-40's and dont know which one is newer or older.

I was able to delete and readd this EP-40 it to my network last week.   But it went offline again.

My ORBI is a 3 node mesh system.   

My model is a EP40 - but this form said EP40 is a bulb and to go to other forum.   EP40 is an outdoor smartplug.   So I had to use EP40A.