There is currently a display issue with the Hero EXP Fusion feature. Your Heroes will still receive the correct HP and ATK bonus as you level them up. We apologize for any inconvenience and will strive to resolve this issue as soon as possible.
Follow IGG on Instagram http://instagram.com/iggigotgames/
Like CC on Facebook http://www.facebook.com/CastleClash
Like COL2 on Facebook http://www.facebook.com/ClashofLordsII
Like DH on Facebook http://www.facebook.com/deckheroes