I can't enter to the game

What browser is that? Use Chrome or Firefox.

Press F12 to open dev tools and pick Console tab - and make a screenshot for me please.

It looks like that

Like this?

That's exactly what I wanted. It tells me what error and where to look.
I was able to fix it. Try now.
Please confirm does it work. If not - tell me if your Chrome version is up to date.

I still in the problem

I get the 37.0.2062.120 Ubuntu 12.04 (281580) (64-bit) version

Got*

It seems your upgrade system doesn't work. Current version is 50 and there is no way it will run on Chrome 37 which is 2 years old. I am sorry but there is no way I can fix that - it doesn't support a lot of new things. You have to upgrade you Chrome (or the whole Ubuntu - 16 is really awesome :) )

Thanks