As a possible answer…
I have had this problem today.
I loaded up a new role for a client and listed it under a NEW group-wide category. I was able to view the actual job page but in the excerpt listings page nothing was showing??
I narrowed it down to the NEW category I had added.
I selected pre-existing category to post the new role under as a test and there it was the job loaded up and was shown on the excerpts page????
All older and still available positions were showing fine but not the new role I added this morning.
So there may be a small problem with adding new categories???? Otherwise, everything works fine. Great little plugin.