@ToddD I did revert firmware, which worked. I'd like to see a new firmware solve the problem soon. It has to be affecting a lot of people.

@Carl this doesn't explain the nature of this problem. This is sudden, affects multiple users in the same situation all at once. Has to be related to an update of velop firmware or tplink software or...

Within the past couple of weeks, all of my tplink switches are failing to keep connection, flashing green WiFi led. I have a velop mesh WiFi router. Have tried just about everything I can think of....