The problem was with the new tactics - you can't use them in regular games.
It should be fixed now.
That for the scrimmages and so on.
Should start with this season, as far as I remember, and my next match starts in 67 hours 15 minutes. No new tactics available for my team.
There was a different kind of problem.
I think that now the developers are fixing a couple of things so that we should wait a little bit.