Threading problems in SignalR Hub

Hello, I implemented a SignalR Hub to make a game server.

The idea is that when a room is full (4 people in it) I run a new game.
A game:

1. We notify everybody

2. The first player send one data.

3. We switch to next one

4. while the game isn't finished:

   Ask the current player two data.

   Switch to next player

My problem is that with that simple system, once the client sent the data, the server do nothing, that's why I think there is a data race somewhere that I don't see.

Here is my https://github.com/mehdi-arch/okeygameserver in OkeyServer/ you have the server code, in OkeyScript/ you have all the functions needed for game logic.

Thanks in advance for your help.