Mobile security paid addition does not seem to down load completely

I have purchused the mobile security product for my galaxy  GT N8013. I purchused it from Google play. First I downloaded it from their site, but it would just say congratulations it will begin to instal shortly,  but it never does. I finally went to the norton website and tried to download from there. It only partially downloaded so I uninstalled and tried to reinstall. Samething happened

This is not downloading at all like the insructions show. I have been going in circles for 2 days and it still is not properly installed.