Hi
sometimes my formation is changed and in games the players selected by me is not in the formation
eg: fastticker, spartak moskow vs terek, correia was selected but he didn’t play the match
why?

did you check whether he had any red cards ???
( was the whole formation changed or was it just the same formation with only one player being replaced ) ?

to confirm u can go to players statistics and see if that player had two disciplinary points ? ( for every 2 points player receives in each competition, he is banned for the next match)

(may be GMs could confirm that )

he had no red cards, but he has 2 DP. what means?

I have seen this problem many other times, with my old team too

two disciplinary points means either he received two yellow cards or one red card .

two yellows could have been received in two different matches…

you can check your match reports and confirm for yourself