CandyCandy

Try shift+right click inside your folder with those server files, and choose "Open Command Window Here".
Try to execute servers from here. That way, if they would close, this cmd window would stay and you could see the reason why server stopped.

Enriched minerals using chances of normal minerals, but trying to roll them 2 times until success. They don't have their own chances. You can edit this behavior here: https://github.com/rathena/rathena/blob/master/npc/merchants/advanced_refiner.txt#L81