Topic: 2nd Player on splitscreen doesn't receive trophies

My friend and I have been playing Human Fall Flat so we can platinum it on the PS4, the game was downloaded on his account (idk if that makes a difference) and we both connect our controllers to our seperate accounts, but as player 2, I havent received any of the trophies, and as far as i know this game should allow both players to get them simultaneously. Is there a setting or something thats preventing this? Any advice is appreciated!

@Shinysails Alot of games do that and I don't know why. A big one of that problem is the Lego games. I played those games in splitscreen with my son and he is always player 1 (just because he is usually on the left side of the tv and I sit on the right) and he's had platinumed all of them while I haven't. Even stuff I do to get the trophy gets credited for his account.

The only thing I can suggest is once your friend gets the Platinum replay the game with you as player 1, that's what my son and I did with Lego Jurassic World.