Trying to purchase Plants vs zombies garden warfare 2 but it's not "available" and I think it's due to its 10 hours trial.

So a year ago there was a 10 hours trial of Plants vs Zombies Garden Warfare 2, now I want to buy the game but it won't let me to. I know it's because of the 10hrs thingy, so do I have to delete the game or complete the 10hrs trial?