Battle Arena Wraith Glitch

[Glasswalker16]

Having an issue with the Nightmare Battle Contest; just reached the (lvl4?) Wraith Dragon and it fails to load an image and when I start the battle anyway, I press Attack/Magic, it automatically resets the Arena and makes me wait an hour.

[[S8] Elsa]

Please make sure you're on the latest version of the game, Dragon Story: Halloween. I checked this out and was able to defeat the Wraith Dragon using Magic without any issues.