My app review got rejected because of below reason:'we noticed that your app incentivizes referrals in order to sign up new users. While rewarding the invitation sender with points or other digital content is acceptable, the person receiving the invitation should not receive any rewards for downloading or registering an account to use your app. Incentivizing downloads has a direct influence on the App Store user reviews or chart ranking.'Mine is an MMO card gaming app. To promote the game I provide each user a unique referral code which they can share with others. When other user redeems that code, both referrer and referree get bonus points. My code can be shared with existing players only. i.e. you must have downloaded the app first and then try to redeem the points.I saw most of the competition app as well as many other (e.g. uber) use the same model where both sender and receiver bonus points. and this is a very standard and fundamental model of marketing. Any suggestions on how to get around this issue please?Thanks,Mihir