Garden Warfare 2 online split-screen PS Plus does’nt share.

So about a week ago me and my brother tried to go to online split-screen multi-player(Plants Vs. Zombies Garden Warfare 2) but when we tried to go online we were met with a message that went along the lines of “You or a member of your group do not have the correct permission blah blah blah” And we assumed it was because our Playstation Plus membership that we use on a different account might have expired (The membership was normally shared between us from a different account on our PS4) but the membership hadn’t expired. We thought maybe that account had some kind of glitch or something so we got a new membership on my brother’s account and now HE can play online multiplayer but I can’t. Before we got the membership we used 2-day free trials on one account at a time and when we did it worked for both of us (Meaning it was SHARED) but now the memberships don’t share for our accounts when trying to access online split-screen multiplayer. Every other game I have whether multiplayer or not works perfectly but this is the only game with this issue. Any solutions?