WHAT3WORDS widget

Have any VA4 users been able to get the WHAT3WORDS widget to work. I have been able to download it to my watch and run the widget but after that the screen says ‘Waiting for GPS’ then ‘Loading’ after that it times out and returns to standard watch face. Ie. I would have expected to see three words defining my location.

I use GPS for runs no problem. Do I need to set GPS for What3words somehow. 

Thanks