Talk:Diary of Investigations - Main City/@comment-2001:67C:2660:425:1C:0:0:24C-20200124072131/@comment-35829463-20200124213219

Just to be sure on this, it doesn't necessarily mean the cases"before" in NUMBER... check EVERY CASE in the book... because sometimes there is a "higher in number" one that needs to be completed or resumed. The game allows space for the case, even when it's completed, it only allows you to play ONE other case at a time... but that "previous story" may be one with a higher number than the first place where that notification comes up.

So, if you haven't, check ALL the cases (upper city & lower city). And if you're sure there isn't anything that you can "resume", then definitely contact support ;-D