ECO wont come back on

So, I just got home and turned off the ignition. I then accidentally clicked off ECO. When I went to press the button again, it lights up and it does on my dash as well, but once I let go of the button, they are both off. I thought this had something to do with the car being off, so I started it and I still couldnt get ECO to go on.

Am I doing something wrong or is it possible that the button is broken? Its warranty, so its all good. Just wanting to know if I am missing something. The manual didnt say anything special about ECO