Re: Can’t add items to sets

I had this issue also. Couple things to look at: Make sure the cards you're trying to add are not BND cards. They cannot be added to sets. Also make sure all your cards are unlocked. The game glitches out when you lock cards and says you will go below the item/position minimum when trying to get rid of certain cards. After unlocking the extra cards I had, the issue went away.

Hope this helps.