I purchased Hearthfire recently and I have completed all of the requirements in order for the courier to send me a letter. Whenever the courier comes to me, it shows that he gives me a letter but whenever i check in my inventory there is no letter. I restarted saves a couple times and even re installed Hearthfire but still i never receive any letter to start the quest for Hearthfire. Does anyone know why this happens or any advice so that i can receive this letter? Any help would greatly appreciated.