1s color canot connect after wifi password change.

Hello. Į have 2 1s color bulbs, and 1 flament. After changing wifi password app found only flament ant One of the 2 color bulbs. After reseting and trying to pair it stops on about 30 percent, and shows cannot pair device, check power suply or Internet conection. Both works well. Bulbs were removed on app before new pairing .
Thanks