When you receive your watch or after resetting debuggig is disabled, and to reenable it on the menu is only the easy step, the real fight starts to somehow force the watch to show the confirmation screen for the RSA. It requires a nuber of rebooting both your device and maybe Windows, too. In my case I restarted my Window and watch at least two times, and eventually I received the demanded RSA screen on the watch. Really weird why not just adding a RAS confirmation checkbox right away you enable debugging on the device? Why Samsung is forcing on us this really frustrating procedure?