For anyone interested I managed to fix mine after playing around with it
again tonight, maybe this will help you also.After un-linking Yeelight,
I could still see the devices in Google Home just greyed out as though
disconnected but no way to remove ...
Same issue here, been going on for a couple of months now, considering
scrapping Yeelight and moving to Hue. Try to relink on Google home and
just get an error that no compatible devices found even though its been
working well for 5 years
