First, I already paid for MLB rosters earlier this year. Having said that, I went to team manager, click on discover teams, found nfl and then downloaded roster I wanted through import.
Wanted to test app by viewing tonight's game, but when setting up game, no screen popped up, remains blank

Downloaded nfl rosters but could not set game. When I did, game screen remained blank. What did I do wrong?

I was hoping for add on for nba teams like the Iscore mlb option for baseball

I am thinking of getting Iscore for basketball. Does it have options for the nba teams to cover the playoffs?