Theres a bug in the game where you randomly can't use the R2 button to craft items, open cans, etc. Its already happened to me multiple times. I'll be an hour in to a playthrough and all of a sudden I can't craft or open up boxed ammo, or load an empty magazine. Its a really annoying bug because as soon as I notice it I'm forced to leave the server I'm on and find a new one and hope it doesn't happen again. Your game is fun, when it works, which isn't often. Fix your game we paid for it now its your turn to deliver.