Fantasy Football Question$$??

I'm handling all my fantasy teams on NFL.com this season. One of the leagues is a standard league in which i had won the matchup initially by a little over 2 points. Looked at it again earlier today and now it shows i lost by a point meaning a 3 pt swing out of nowhere. Messaged the commish to see if he changed the format of the league after the initial game, because I've had that happen to me b4. I thought it was pretty bush league the first time it happened. Fortunately I've only ever played for fun, not money.

1) If there is no report of any stat correction by the site or NFL... is a person to assume there was a format change by the owner of the league if they end of losing a game they initially won??

2) If you were in a money league and a format change by the commish cost you a game after the initial game was played would you feel some type of way??

3) Do you think it should be legal to change the format after the first game has played??

 

I'd be pissed if that's what really happened.