desbloqueei meu LFS S2 , mas quando vou em online só aparece server demo.

Did you try to pay for your S2 license instead of pirating the game?

Sim , já fiz isso , porem que ativa normalmente , mas fica online fica como demo.

Where did you bought your licence? If here in lfs.net website,then your transaction is not complete. If by that brazilian reseller,you have to enter the voucher code he sent you (probably with all the explanation).
Otherwise it seems like you have not bought but just unlocked with unlocker,which does not give you a valid licence needed for online play,it just unlocks content illegally.

Ata entendi , como podemos negociar uma licença , faço divulgações em meu canal no youtube... oque acham ?

No idea what are you saying as google does not translate your text in fully understandable sentence. For proper international communication you have to learn english,portuguese is spoken by rather limited amount of people around the world,google translate is not a reliable solution.
Anyway,read this,might help you: https://www.lfs.net/forum/thread/90633-New-Brazilian-reseller---BRLok-closed

I would like to negotiate an S2 license, I can post you on my channel on youtube, facebook page with 2000 likes , ??

teria como negociar ?

Negotiations on this subject closed some time ago, the result being that Brazilians now pay half of what citizens of other countries normally pay for an LFS license.

There is also a Brazilian reseller that specialises in local payment options for your convenience, as mentioned above.

To be honest though, looking at your stats, you haven't even scratched the surface of what the demo has to offer.

1. Don't pirate game.

2. Buy S2.

3. Click on S2 server of your choice.

4. ????

5. Profit.

Simple