Can you help?
i buy s1 license, but, i not can play in drift online server, sorry my bad english

"You need to be in s1 mode so you can pilot" can help me ?

you need to unlock S1 mode in the game, in the main screen

Is your LFS client unlocked?
If not - click on the license button under options button in LFS starting screen. Enter your username (manolox50) and GAMEpassword you selected in https://www.lfs.net/account/details and then click unlock.