cant connect Color light bulb 1S


I had to restart my router because of connection issues and after that the 2 bulbs that I have got disconnected.
I reset both of them, and I tried to reconnect them to the yeelight app, they start blinking but when the connection process reaches 100% I get a connection error. The bulbs dont stop blinking after this.
I also turned the bulbs off for several hours and tried to reconnect them but didnt work.
What can I do?