Soomla Iab Error While Purchasing In Game On Android

im using unity 3d to make a simple game just for testing Google services, for Google play games services i use googleplayplugin and for iab the soomla plugin. i think all is config

Solution 1:

the code is good, the problem is on the Google developer console, in order to buy i must publish the apk ,even if it is a beta or Alpha, and after i can test with testers approved accounts.