Unable to restore the purchase !!! – English Grammar in Use: Sample Review

The purchase can not be restored! It lets you to restore and it shows that has downloaded it but when you want to open each unit it says it hasn’t downloaded yet! The same results after 10 hours I was waiting for finishing the download but the result was nothing! I’m really unhappy a helpless because of this serious problem and irresponsibility!
Review by AR9516 on English Grammar in Use: Sample.