Hello

So I run my LFS and go to multiplayer ,

And here the probleme, its write username can not be found

What ?? Why ? i'm logged in

And if you see my profile you see Online at: [CLC] CityLifeCrew Cruise

But I don't play !

You must race more to overcome the problem.

Sometimes you get stuck on a server due to connection problems or cosmic radiation. It'll fix itself in a minute or two.

doesn't work !

maybe someone know your lfs password

It doesn't appear as if you're on that server at the moment - it could be that the master has gotten stuck or "confused" perhaps.

Might be worth dropping the devs a quick mail, considering that you posted this about 2 hours ago - you can contact them directly here:
http://www.lfs.net/?page=mailus

I have found the problem ,

In my account status iit write :

You have been denied access to the online part of LFS, because you have violated the license agreement. Your ban will be lifted in 30 days.

What and why ?

I have do nothing

The only people who could give you a firm answer would be the developers. However, if you've been banned from a large-ish number of servers in a short amount of time, this could be an automatic ban (although if I recall correctly you get an email warning before this happens).

but I don't recieve a e-mail!

I don't know how many more times it can be said - the only people who can give you the actual answer are the developers. You will have to get in touch with them directly here;
http://www.lfs.net/?page=mailus