Guide: hell ll equip 3 of same set not working!

I have equipped 3-8 of the same set like my guide is telling me to do and I have yet to get it to cleared and get my rewards for that. The battle pass guide is hell ll 5/7 equip 3 items of the same set and I have!! I have the set in my armory please fix this glitch I would like to move on in my guide!