Thank you.
After adding edge drivers and resetting the switches (removing from smarthings and re-adding), I was able to make them work again.
Just adding edge drivers was not enough, as switch settings page looked old, like with device handler.
I suspect that samsung started to wind down gradually those groovy based device handlers, as basically all devices stopped working at the same time (give or take, as I was on vacation).
I was able to find IDE link
https://graph-na04-useast2.api.smartthings.com/ide/devices
it was showing last actions for the switch, like double up, or double down, but routines were not executed at all.