I've seen some changes in the fan survey, I've also seen the income of my utopian team decreases a lot today for my last league game, but the fan survey is still not correct. Only one ball for the last game against my rival, which happened last season...
Have you forgotten about this match
(94265303)?

Your last rivalry match was a loss...
Therefore, your utopian team attendance seems correct, the initial attendance might have been calculated incorrectly but now it should be OK. I don't know if you changed your ticket prices, but the attendance numbers seem in line with a normal start-of-the-season drop almost all teams that had a good run last season experience. This is due to normalization of some of the fan survey parameters (we do not include cup games from last season, etc...).