Can't unlock Witcher Gear bonus

[Souleria]

I use Cat School gear and have upgraded all of them to Mastercraft, both armors and swords, yet it still state in the item description that I haven't unlocked anything (0/6). Anyone have any idea?
Ps: Yes, I have the crossbow too, dunno if it can be upgraded to mastercraft or not tho.

[Helrato]

If you want to unlock the set bonuses, you need to upgrade them to Grandmaster, not Mastercrafted. And to do so you need the B&W expansion and have a specific armorer upgrade them.

[Supafly]

This^^^

[Souleria]

I just approached the B&W expansion and it's true since they introduced it in the tutorial when I first come to the DLC map. Thanks for the info!
Ps: This place is so freaking bright!