HI I NEED HELP WITH MY PS3

OK SO I RECENTLY PURCHASED THE GAME "CHILD OF LIGHT" ON GAMESTOP AND I PUT IN MY CODE TO DOWNLOAD THE GAME ON MY PS3 BUT APPARENTLY THE DEMO IS THE ONLY THING DOWNLOADING???? WHAT
LIKE IN "MY DOWNLOADS" IT SHOWS ME I HAVE THE FULL GAME AND THE DEMO BUT EVERYTIME I DOWNLOAD THE FULL GAME IT TAKES A SECOND AND SAYS THAT IT'S DONE BUT WHEN I GO TO THE GAME SECTION OF THE HOMESCREEN NOTHING SHOWS UP?? WHERED MY CHILD OF THE LIGHT GO
AND THE DEMO I'M NOW DOWNLOADING IS TAKING AN HOUR? WHY DOES THE FULL GAME TAKE A SECOND BUT DOESN'T EVEN SHOW UP
I'VE SEEN SOME PLAYTHROUGHS OF THE DEMO AND IT SAYS "UNLOCK FULL GAME" AND I'M GUESSING THAT'S WHY BUT COULD SOMEONE PLEASE PLEASE PLEASE HELP ME HERE