Adding a new light in Hue Bridge Integration app

I've recently added a light to my Philips Hue, when I try to get HE to see it by adding it through the Hue Bridge Integration app it doesn't work. The light is there in the app, I select it by ticking the box and click done but it isn't available in HE and when I go back into the Hue Integration app it again says one new light is available to be added.