Google Translate gives us this…
Hello, I noticed a while ago, regarding the set equipment, that the vast majority have 8 slots, and I have 6, I thought it was a delay issue in the update, but several days have passed, and the update in which two more parts of set equipment were added in the past, when doing pvp it generates a difference. I would appreciate if you could answer me, and if I am the only user who has this happen to him.
The two extra weapon slots are given when the hero reaches Inferno 1 difficulty which happens after you reach Paragon 799 and kill Hell 8 Phangwrth…
So, is your hero in Inferno 1 / paragon 800+ ?