Assuming anyone from the Dev Crew looks at this forum, here goes:

1) Once Numbat lures Jasper away from her office she never returns. This breaks a subsequent quest in which you are supposed to speak with her to ask her where to find someone she is looking for.
2) Djet is nowhere to be found in Koorda, nor is the Koorda library anywhere on the map. There is the one NPC Nmaamba, but nothing else there other than two wandering human figures with whom it is impossible to interact in any way.

Thanks for posting and like I said to the other person who reported issues, I really appreciate the details and will be monitoring these forums much more closely going forward.

1. This should not be the case, so I'll look into where she is sent at that moment, and include it in the next patch.
2. So the spoiler is that there's Koorda (surface) and Koorda Ungerground, and you need to trade enough with Ngaama to have him take you seriously. We reduced the dollar amount required as well as gave two hints for this (the Kalgoorlie entrance guard as well as Mira in Lake Deborah library) but if players are still missing it or finding this frustrating, I reckon it could be time to scrap this entry requirement.