Clan War is crashing.

I'm up in clan war, when I'm choosing the maps to start the combat, the game crashes instantly and doesn't let me enter the game when writing /rejoin.
It has happened to me more than 3 times in 15 minutes.
The players are telling me that I appear on the menu by pressing TAB, I don't know what kind of error is that, do you suggest me something to do?

reinstall the game

Maybe post the crash log it will be easier to spot the problem

It happens rarely when you used /go command if you cant join room, do relog and type /rejoin it will work perfectly.