Complete newbie

Hi, upon recommendation of a friend, I got an mxq pro tv box. I went into Kodi and Videos. Then Ustvnow. None of the channels will play. I get a message that says playback failed and check log for more information.
My friend just plugged hers in, and the channels played. She never had any issues and can offer no help because everything was automatic for her. I don’t know what a log is, I don’t have a clue what to do to get this to work. As far as I knew, I would set it up and be good to go, or I never would have got an android box. Can someone please tell me why the tv channels won’t play? How can I get them to play Tks