Silly question, I seem to have lost my CC, when I click on the Red button I don't get Photoshop page, no sign at all ?

I have uset Photoshop and Lightroom for years, joined CC a few weeks aog

but as I have CS5 still on the desktop and use Lightroom all the time I have gone

to CC only a few times, now I can't seem to open it at all. Any ideas ?