I just made a bid on a dutch player, and it shows another bid of a team in Belgium. I understand that they give Belgium the same language as Dutch, even though half of Belgium speaks French, but also the country is stated as Yes for him.

I wondered why this is the case.

The regular Belgian can speak both Dutch and French, sometimes even German because that too is an official language in Belgium.

He probably has two dutch players in his team.

Jonas, thats why I said: "I understand that they give Belgium the same language as Dutch".

My actual point was, why is the country also stated as 'Yes'.

Ahaa, I'm sorry, my bad.

Then he has 2 dutch players in his team, they might be in the reserves squad if you don't see them.

If you wanted to report this as a bug you'd have to post it in the bugs forum btw. As a question it should be in support/questions.