My Yeelight bulbs are offline after reboot router.

I have 7 Yeelight bulb color v2(with lates firmware)
some of them will be offline after reboot router.
I assigned static IP to all of them and try ping and no respond that seems to be they don’t reconnected to router.

It’s annoying to switch my main circuit breaker to make it work again.
Anyone has the solution?

i am facing same issue with my yeelight , going offline after router restart…