I’m not sure why you had trouble with Radiator. But maybe there was a bug 3 years ago. I went back to my original tutorial app to see if it still worked. I also updated it to use Hive examples:

https://peakd.com/@inertia/stinkypete-rb-reward-claim-script-for-steem

Yes, the devportal should also have a simplified tutorial for this. I should work on that.