[SOLVED] Please check my IAP Setting (what is wrong here)

Please see my in-app purchase setting

what I am doing wrong. I am receiving this message when I press purchase button to remove advt

"Error Authentication is required.You need to sign into your google account".

I have done

if purchase = 0

Advts will be shown

but when its become 1 then advt will go hide

when purchase will be success

purchase will be = 1

and I have save purchase value to the local storage

Image

help

IAP do not work in local preview on computer/over WIFI.

As stated, you need to be on the target device, in an exported application, being connected to your Google account.

i export it and testing in device and connected with google account

even i have downloaded your tutorials example

and test my app

message saying : The item you requested is not available for purchase