@Tony The issue was resolved by TP-Link support via e-mail. Slow support, but great solution. Changing the wireless security from WPA/WPA2 Mixed to WPA2 Personal, fixed the issue. Very good to know.

@Tony So, reset for 15 seconds. Click and actually reset seems to happen at roughly 10. Then goes from fast orange/green to slower orange/green. Enabled my guest 2.4 network. Attempted to connect...

@Tony Definitely longer than 10 seconds, but not sure about 15. I will try that. Have done it multiple times. It ends up making a click sound after 10 seconds and the orange/green blinks fast. The...

Some history... This device was installed professionally two months ago. It has worked without issues since then. The the light switch is 20 feet from my wireless router, in an open environment. Last...