I have 3 Samsung HD Pros WiFi Cameras and cannot get them to work with Blue Iris 5.0.

I have tried everything including: Generic/ONVIF RTSP settings.
Using Inspect - I am getting Failed with HTTP 12029 - I have temporarily opened ALL ports. Port 554
ONVIF port 8000
Receiving Error: 8000274d (refused; check IP address and port)

I have tried Samsung SNH-P6410BN RTSP
Path /onivf/profile5/media.smp also - no luck same 8000274d error
Any ideas?

I would send an email to support, and ask them to have a look for you. Don't forget to add all of the detail from BI by clicking the "Email support" button in the BI settings, as it lets them know your licence number etc.