Game problem

Hello Im a CEO on LU, the name of my enterprise is Vajhun Investments, I have 75 corporations and for some reason the game isnt allowing me to build more. When I try to build more it rejects my request and says "you own too many corporations already". If u have any advice I would appreciate it.

Are you a premium member?

Nope. But the game documentation clearly says that free members can build 300 corporations and hold 500 different stocks. This must be a game bug or smthing like that.