players disappeared

yesterday without any problem that I had with the team with all contracts still valid I am missing the best players without my receiving any reward I would like to know why

Negative funds. If you have negative funds for a week, your best players will be sold.

but I said that not I had negative funds

Well, the only reason your players would go away is if you had reached negative funds the game sells them. if you didn't go into negative, you're sure, then contact Nordeus Support