Collectible Card Game Headquarters

Hi all. having a question on set up a public server
on a vServer. we bought a Linux vServer on Zap-Hosting

so i installed the latest version of Java 8 already

after this i copied the folder xmage-server located on

usr/games/xmage-server1/xmage-server

Question a: do i keep the config.xml on the linux vServer
originally with server ="0.0.0.0" and server name="xmage-server"
or do i have to change something?

what i did is overwrite the config.xml local, means on my computer
where i launch xmage. so there i wrote server="and my IP Adresse"
i got from Zap-Hosting.

i keep the server name "xmage-server"

what about the port? should it be still 17171?

so now i open xmage and at the xmage window i "start server"
by checking the windowed process i got the fatal error in the end:

can someone please help me out?
i was happy getting that far, so it would
be great to get to a point.

thanks a lot
Rico