Me again... I got it!
I reinstall the VPS (Ubuntu 16.04) - Did not touch the Windows 7 installation or Wallet, key etc.
After this:
https://github.com/EroticaCoin/EroticaCore/blob/master/doc/build-unix.mdI did this:
http://www.explorerz.top/compile.html(Just the part "#### SYSTEM PREPARATION ####" - not more)
And then the script:
https://github.com/EroticaCoin/MN_Script/blob/master/readme.mdEntered my private key and wait 20 min.
I am sure I did a lot of things that are not necessary. But this is working for me. Hope to get the first results after 24 hours.
Hope this is useful for anyone that is stuggeling in howto setup erotica masternode.