Need help with my razer ouroboros

Hi there I never used the wireless function from the mouse but I really wanted to use it.
The dock is connected to the pc and the mouse is sync to the dock but when I press the two buttons to turn it on it doesn't turn on.
I really need help with this.
Thank you.

Edit:
Forgot to mention the mouse is a few years old :/
And if theres no fix to it how can I get a new one I really enjoy this mouse.