Anyone Managed Get Tizen IAP Working - Official Plugin?

Please shed some light on this…

Cannot seem get work Unity 5.4.1patch3, even with Developer mode enabled.
The sample app does not even do successful purchase in Dev mode.

Anyone use this plugin and actually get it to work?

Upload the application and start the Beta Test. Make sure the versions match in the Tizen manifest.

Issue is when Tizen QA was testing it loaded payments popuo native and followed all instructions, at the end nothing happens… i tried on physical device and said - tranaction failed or so…