After talking to pirate's 3rd job instructor i went to 1st job instructor, i didnt read what she was saying but after this converation ive got the necklace of strength. So basically i skipped whole job instructor fight part somehow (i heard u have to fight her like any other class). Few minutes later i did 3rd job advancement on mm and i had to fight, so it was only sair's problem EDIT: idk if needed but IGN: Concubeene
Both Bucc and Sair (pirate) have it disabled as far as I know (maybe for bug reasons?). Don't worry about it. Congrats on 3rd job.