when enchant plunder to attack the skill have a insane reuse of 1kk hours ( 1xx years -.- ) http://www.subeimagenes.com/img/shot00006-300977.html 1xx years is a bit longer for a skill i think... :/ so i use it, and my sons can use it again. not funny!
did you try it with higher enchant lvl to see if the problem is still there ? or the skill is like this from 0 to +10 ?
i cant enchant the skill if is in cooldown so i cant. i create a new char and try again with hight level. edit: today i try the skill and i can use it normally. all levels enchant works correctly. i dont know why i have this insane reuse but now all works good.