Sharing game problem..

There are 2 here that plays this game with same wifi. The game is now showing items one person gets them on the other person phone? How do we stop it. So each can find there own artifacts and win things on there own.

Just started 2 days ago. Have played it a month and didnt do it. Any one no how to fix it? On iphone 7 plus.

Spke3KewBuddy about Temple Run 2: Endless Escape, v1.35