Create game but still bug – Dragons: Rise of Berk Review

I have enjoyed this game so far untill the Defend mode unlocked. Enter the mode and game is freezed in the first tutorial screen so forced quit is the only way :( . please fix this, Im using ipad air2 ios 10.3.2. Another thing is bothering me, Brawl should allow to compare dragon's stats side by side, or any better way to choose the stronger dragon.
Review by Alvin 4M on Dragons: Rise of Berk.