I can’t see your test version because the file host only allows a download every 180 minutes, but I looked at your Complete version and your Level file and PrimalGameData_BP had a couple of issues. In your level file there’s a section named “force load map name” yours says “The Island”, it should be blank so it can be used on other maps. Further down, there is a part called “Gamemode Override”, that should be set to “none” since you aren’t using a game mode. You can also delete the TestGameMode file from your mod as it won’t be needed.
In your PrimalGameData_BP, the Mod Name and Mod Description are blank so that’s why you aren’t seeing them in your mod list. You have your NarcoBench under “additional structure engrams”, it needs to be under “additional structures to place”(I saw you posted a pic of it correctly, but it’s not correct in your complete version link). Also under App IDItems and Default Game Mode, click the yellow arrow and reset those.
I’ve done all of that and reuploaded it, try this and see if it works: http://www.filedropper.com/narcotic