A Strange Warning" mission - no ORC invasion, no Resource Finder unlocked

[Nodse]

I’ve already completed all the story missions and the Ranger Challenges, collected all the molars, and fully explored the map, including all Ominent labs, all Optical Disks (Turbo included), unique weapons, documents, etc. But I still haven’t unlocked the Resource Finder.

The only mission left is "A Strange Warning". At one point, I did get a warning saying her ORCs were coming for me, but the invasion never happened and it’s not a case of me failing the invasion, like I’ve seen others mention.

I think the issue might be that I found the Network Center too early while exploring. Even though I got the Stranger’s warning saying I wasn’t supposed to be there yet, I continued up until I reached the ****roach boss and heard the Stranger say she was waiting for me. After that, I decided to go back and finish everything else before returning. I think it's a bug and if it isn't, I have no idea what else I should do.