Hello .... bos,
You have to also register the License Key of your legal copy of SSE in your Profile in this Forum. All products of Ship Sim have to be registered in your Profile in the Forum to allow you access to Multiplayer.
Further ....
- Where did you buy your copy of SSE from ?
- Is it a www.shipsim.com DVD / Download or a Steam version ?
Salamat !
Regards
vin_sun