iOS9 / iOS9.1 Already purchased and can not restore item.
From:
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];
To:
NSArray* arr = [[SKPaymentQueue defaultQueue] transactions];
for(SKPaymentTransaction* tr in arr){
[[SKPaymentQueue defaultQueue] finishTransaction:tr];
}
[[SKPaymentQueue defaultQueue] addTransactionObserver:self];