Since the last update to Cross DJ app(s), pro included. For the iOS, A huge problem has emerged. The app wont show songs waves, it just shows a loading symbol that never ends. The song selected can still be played but you cannot see at what point into the song your at because it wont load the wave lengths. This problem disables the sync mode. To give you an example of what I am talking about. You can view my youtube video on the matter.
https://www.youtube.com/watch?v=COaUk5hl8bAI have 2 iPad Pros, Both see the same results so I know its not just my tablet and probably many other people are experiencing this just now and haven't reported anything yet. This bug must be fixed ASAP. Until then, I guess I'll have to hold up on my DJing.