now very confused

so i try to login today,says it doesnt recognise my login details even though they're the same as last night.
change my password and got in.go to storage in ascalon to find two of those present things missing,one was a miniature king adel someone or other and i cant remember what the other one was.three others are still there along with all my other crap.
any idea what the hell is going on? im sort of new to all this! cheers
edit.also just realised a black dye i had is gone,does this mean ive been hacked?

Most likely means you've been hacked. I'd recommend reporting this to NCSoft just so that they can ensure that whoever hacked you won't be doing so again.

Also, i'd advise you to not only change your game password, but also your NCSoft Master Account login info.

I would come to the same conclusion. change your passwords again and move on.