@feneur Can you lift his post limit please, thanks.
@Speed_Freak If you are on Mac Os you don't have a firewall so something else is blocking your connection. Are you on a restricted network, such as a school or a public place ?
What OS are you on ? If you are on Fedora, Windows, or Mac OS try disabling TLS encryption in the game options. It is in the lobby tab. You should be able to join without a crash then.
An Engine split is planned. As for splitting the civs not really possible because they are interdependent and I don't see how having 13 folders is gonna make things easier for us ^^