Solved SBD Other Problem with Jartex account (mojang account nickname change)

[koshimazaki]

I've changed my Minecraft nickname on Mojang's website (from "KapralWojtaz" to "koshimazaki"). Then I tried to log in on my account, but I saw "/register (password) (password)" notification. So I made a second account (on "koshimazaki" nickname). I don't know how to get the items from the first account("KapraWojtaz"), but i don't want to change the nickname to the previous.
I mean, just want to take all the stuff from the first accout. I need help!

 

[voodootje0]

Dear koshimazaki,

We do not support name changes, this is broadcasted in the server every few minutes.
To get your items back change your name back, if you cannot change your name back use any cracked launcher and use your old username instead.

Kind regards,
voodootje0