Billing: isBillingSupported always unavailable
<p>I am testing In-App Billing on Samsung Galaxy Tab 2 7.0 and when I try check if the billing is available, I always get the response 3 - <code>BILLING_RESPONSE_RESULT_BILLING_UNAVAILABLE (Billing API version is not supported for the type requested)</code>.</p>

<pre><code>int response = payService.isBillingSupported(3, getPackageName(), "inapp");
</code></pre>

<p>I have created draft application, uploaded signed APK in developer console and added an email of the test account (in LICENSE TESTING field in dashboard which notes that those accounts are also used for billing tests).
Also, my device is using this test account as primary account.
I am debugging app in Eclipse.</p>

<p>Edit: Tested also on HTC Evo 3D, same thing, response always returns 3.</p>

<p>Edit: Do the test account must have a google wallet associated or something else in order to test the app?
My location is Serbia, could this be the problem?</p>

<p>What is causing this problem and how to solve it?</p>
