When I finished the game and go back to the lobby do I have to start again the game in snooper or they still see me in the lobby and can enter the game? Sorry for my english.

The host closes when you start the game, so yes you need to close and rehost it again. If you have the lastest version of worms armageddon (3.7.2.1) just type /open in the lobby, the host should appear in the host list again.

Thanks!