In my case I didn't do anything special. Just playing my match and when the match is finished and that I've spoke to the team, the host get that message multiple times and then time goes on and we realize that the scores have changed.
It happens to me too. I can't play my online save anymore since the winter update. Every game that i play generate this message to the host.
It only happens to my games not to my friend who's hosting the game.
I've uploaded it with the name "Brian Spanoghe - Broadstairs Utd (v02).fm"