I have tried to connect it to 2 different routers.
On the first router, the LED behavior is always “slow breathing”.
I have made sure the internet is working properly (even it recently being changed to a new one by my ISP because I thought the problem was the router).
On the second router, the LED behavior is “solid light”. My Cloud Home is detected but when I clicked the connect button, this notice appeared : “Unknown error. Please try again.” .
I have tried reboot the My Cloud Home, hard reset the My Cloud Home, restart my routers. But the problem still persists.
I have tried to hard reset it as mentioned in the link you have given to me.
But still :
The first router : the My Cloud Home’s LED is always slow breathing
The second router (interestingly has slower speed than the first router) : the My Cloud Home’s can be detected but when I clicked the connect button, the notice “Unknown error. Please try again” still appeared.