IAP Google require auth error.. what should I do?

This is the first time I am using IAP feature in Corona SDK, however, I did some of the solution from the thread, but the problem hasn’t been solved yet… It’s keep getting error, Authentication is required… :’(.

 

I have write full apps+unique store id such as “com.mygames.tetris.weaponsuper” and in fact, I published the app, when I install from play store, and try in another gadget (also not using developer gmail/id), still the result same… 

 

What should I do?

 

I’m following this article: https://coronalabs.com/blog/2013/09/03/tutorial-understanding-in-app-purchases/

 

Thank you very much…

 

SOLVED :

NOT USING FULL APPS+ITEM’S ID, I’M USING ITEM’S ID ONLY e.g. “weaponsuper” only