Cranberry IAP - Authentication is required

I have the Cranberry IAP plugin installed with the settings below, but am getting the Google Play error, "Authentication is required. You need to sign into your google account."

Yes, I am signed in on my phone.

I am wondering is this error, because I only have an app in Alpha, or is it because I am running the android-debug.apk app.

In Construct 2,

1. I added the IAP plugin from Cranberry.

2. Setup the correct Android application License Key.

3. In the layout event sheet

• On start of layout -> Add product ID "myID"
• On start of layout -> Request store listing

4. On touch gesture of button ->Purchase product "myID"

And then I have checks for On purchase fail or succeeded.

When touching the button, I get the google thinking icon and then the google message appears.

Is this OK while the app is in development?

According to google, the issue is because I do not have a published Alpha app. I need to complete the store listing first.

From Google

"Unfortunately, you'll need to publish the app in one of the testing tracks (Alpha/Beta) to test IAP."