I've hidden some of the evidence because it contained personal information. Do you have proof of the fact it matches with the e-mail that was used when the account got recovered?
What made you think you could chargeback without speaking to the user about it thoroughly and immediatly block him?
I don't have access to the PM's, so please just post screenshots of those as well.
User is already banned since he claims to be hacked, however I will need evidence he scammed you so that when he appeals, he will need to refund you in full first.
Seems like your Java has been installed incorrectly. You should be able to click the .jar file and it should open automatically with java, if not you should be able to right click it > open with > Java. Try and re-install Java, as well as JDK. Tell me if that worked.