SOLVED Coop not working

Hello,

I already play coop with my brother since some weeks, but since this morning, we can't anymore while using my main civilization. As you can see on the picture, it doesn't load correctly the group, and I leave it automatically after some seconds. And if we try to run a quest, I also leave automatically the group after the loading, without load the game if he hosts it.

I already tried with a other computer or to group with someone else, but it's exactly the same problem. Sometime, I even get the error message that all cities have to be level 3 for the coop, while we are 40.

However, it works fine if I use an other civilization. Could you help me, please ?

 

Oh, yes, it works ! Thank you very much mate !