Have it running. Seems the php scripts were either not production quality or intentionally broke. The blueprints were also lacking. Have it working so far but I am sceptical if not spending 17 Euro for the marketplace plugin UE4Login would have saved me…
OK stupid me, UE4Login would have saved me time and effort in any calculation. I mean I have been fixing this for 4 evenings around 3-4 hours. So give the commercial plugin a try or share your experience with this one, which I have not tried so far: