Was playing on this save for 60 days or so, then I tried to join it, but it keeps showing this error on launch. I tried again after I reinstalled the game, but it didn’t work. No idea what should this text mean, but I really hope you will fix this. I believe IOS version really needs a large update, and a have had same bug on DS:PE. IPhone 6
Start game, play for a couple of weeks, then you will find this bug sometime.