Its the domain [free domains are not allowed] hosted on YouHosting? If that's the case you were hosting livezilla which is a Livechat Script and its not permited on Youhosting.
YouHosting ToS wrote:
Applications such as, proxy scripts, shell scripts, online gaming scripts, file/image sharing scripts, live chat scripts, paid-to-surf, auto-surf, buxto, torrent scripts cannot be hosted here.
Returning to the topic, i think [free domains are not allowed] has taken your domain back. That's why i always say [free domains are not allowed] isnt very reliable.
Shall you ever need help, don't hesitate to PM me.
Important: I DO NOT represent YouHosting or Hostinger in this forum. I'm just a moderator in here.