Responses can only be as helpful as the details provided. Not only were almost no details given here, what was provided were not even complete sentences.
What password are you talking about, for what menu or feature? Ituens Store login, iCloud, home sharing, Netflx, Hulu, YouTube, etc. etc.
Also ATV does not have a free trial month so what ever you are doing does not sound like it is for ATV. And what ever you are doing only had one free month that you have now gone over why would you still expect it to work?