Party bug

Hello, I already texted Glu support about it hundred times but they can't answer something else than "WiFi is better than 4G" nothing to do with the problem here. I explain: 

We do all our task at a party but if after this we decide to let the game running background while other members do their tasks we won't get 5 stars if we come back in game after the end of the party. So for a personal gig it makes sense. But for a party it's stupid because it doesn't depends only of 1 person. Sometimes I get 4 stars but still get a gift box for completing the party at 5 stars... earlier today I did my task and let my krew finish it. I was doing something outside and when I came back in game my party was over and it gave me a 4 stars and no gift box. But my krewmates get 5 stars and gift box... it's really annoying. The fact that they don't want to update content is a thing. But refusing to make the game works properly is just disrespectful. Hope somebody will feel my pain lol cause I really had enough of this. We're free to go offline and forget about the party or just going to sleep, if members completed it it should be same for the player that goes offline after doing all his tasks