A program that grants points for using Bing search, which users can redeem for gift cards, sweepstakes entries, or charitable donations.
This is just plain DISGUSTING.
Of course, your son did none of what he is being shadow-banned for.
They even stated that they looked into it. Then, just to prove their complete deceit, they listed 5 or so possible reasons for the closing of the account.
If they had looked into the true reason that they closed the account, they would not have given you a list of 5 or 6 cookie-cutter reasons. They would have given you the 1 reason that convinced them that they needed to definitely close the account.
It is all bizarre and despicable.