I think my account has been hacked (one day i found my skin changed )

I changed the password some minutes ago (2 or 3) with a completely nw one (I've never used it before):


My ban info:

http://www.opticraft.net/index.php/page,BanLookup.html?username=kopaka1996

P.S.:I just migrated my account to mojang account; to login i must use my mail as username (i dunno if this info is useful to you)
e-mail:[email protected]

Please unban me: I think this is a great server and I'looking forward to playing in it.

Kopaka1996

EDIT: I've changed your image so that your personal information won't be revealed.