KS230 brightness does not stay - auto dims every few minutes
I have been using KS230 KIT 3 Way dimmer switches in our living room and in our bedroom for the past 9 months. Since the past 3 months, the lights have started to auto dim from 100% to 85% to 68% to 51% all the way to 1%. I use these switches to power on 6 pieces of "EDISHINE 5CCT Recessed Lighting 6 Inch with Night Light, 12W 1000LM CRI90+ Dimmable LED Ceiling Can Lights" bought on Amazon . I have tried restarting and resetting the configurations. They are running on the latest firmware. These dimmable lights have no problem with HS220 single pole switches in other rooms. My electrician says my switches are faulty and I need to replace them, but I am not sure why I face this issue in both the rooms.
Has anyone else faced this issue?
Thanks,
Arul