At least Apple in this case actually provided a reason and list of APIs it is unhappy with. Armed with this you could either in theory or actuality chase throug

At least Apple in this case actually provided a reason and list of APIs it is unhappy with. Armed with this you could either in theory or actuality chase through the maze of your app's dependencies. If this happened to me I'd then have a fighting chance of moving forward. On the other hand, plenty of rejections I've anecdotally encountered are far less obvious and boil down to "we say so". Then you get banned while you still wonder. Google have done this a few times to others I know. Strange times.