Unity IAP not work

IAP in service sectiongreat work in editor, but not work on mobile device (Android)
Apeared only buttons. Item not appeared and button dont working (((
I tested it on Unity 5.3.4f1 and 5.4 (Beta)

I’ve been looking for the answer for the same question. Seems like it will prom you to google buying window after app is on the market. This what i found unity IAP docs

on the very bottom:
When your app is live and purchases are being made over the network…
Since i didn’t lunch my game yet, can’t say for sure.

Thanx for Your answer! I already resolved this problem now with this plugin

This one: