lock scammed me

Link to scammer's Sythe profile: http://sythe.org/member.php?u=109689
Briefly explain the trade:account for $30
How they scammed: i went first gave him info then he sais its invalid so i try to login to find out he changed the pass
Proof that you were not talking to an impostor:look at last screenshot



ok so i went first he said he was trusted
and when i give him info
he just says that the info was wrong flames me and blocks me from msn
after i try to login to the account it says invalid password meaning he changed it.
now why would i give him invalid info if i am going first?
heres the convo
he said that he has a video of the whole trade
if he does i want him to upload it here.














here is some extra proof it was him an not someone else
i added the email he sent me

 

Banned, thanks.