In my case it seem to lost sound outside home or with crappy college wifi or crash randomly.....anyway wont stay....dont like the sight of this skills gacha and gear with stars rating...could turn badly...
It does not seem to be a problem that only happens on the iPhone X. There is a bug in which the sound sometimes stops, as confirmed in the next play video. It will be resolved soon. Because BANDAI wants to lead us to the IAP.
My kids and I just started messing with this after watching season 1 of the show. I'm actually kinda impressed at this game. Very few MMORPGs on mobile worth the name, but early on this seems to have the right stuff and the right feel. No autoBSing through it either.