Does anybody else have issues connecting to the sever?

I get really frustrated when I try to watch a movie that I purchased and it gets jacked up when I try to watch it. I then have to pause and try to go back to the main menu. When I try to watch it again, I get the message that Apple TV is unable to the server. I know that it is not my wifi because I am able to search the web while my Apple TV does not work.