Can't make Android in-app billing sample app to work

Question

I've tried to get the in-app billing sample app to work according to the steps in http://developer.android.com/google/play/billing/billing_integrate.html#billing-download.

I will specify everything I've done + added logs at the end. I hope someone will be able to tell me what I am doing wrong.

Here is everything I did (I know it's long... but I wanted to make sure I did not forget anything):

I imported the Dungeons project into my workspace and my Google public key to Security.java's base64EncodedPublicKey variable. I got that public key from a new app I added to my Google Developer account.

I changed the name of the application package as requested so it does not have the com.example prefix

I build the app and signed in Via "Android Tools" -> "Export Signed Application Package..."

I uploaded that APK to the new app I created in my developer account (the one from which I took the public key)

I added in app product to the new app, with the same IDs as in the Dungeons project (sword_001 , postion_001) and activated them.

I added a test account to my developer account in "Settings" -> "Gmail accounts with testing access" That account is NOT the my developer account, but a new one I created.

I installed the signed app on a device, which I factory reseted and logged in with the test account I added to my developer account.

My device

I installed the app on an android 2.3.4 device with no SIM card (this is my testing device). Google play version: 3.10.9

Results

When I try to buy one of the products, I get an "item not available" error (I get it twice actually). I tried setting DEBUG to true, and now I get "error retrieving information from server. [RPC:S-5:AEC-0]" (twice...)

Logs:

12-06 07:58:42.255: D/Finsky(1955): [7] MarketBillingService.getPreferredAccount: com.sakal.billingtest.merchant: Account from first account.
12-06 07:58:42.275: D/Finsky(1955): [7] MarketBillingService.getPreferredAccount: com.sakal.billingtest.merchant: Account from first account.
12-06 07:58:42.325: D/Finsky(1955): [27] MarketBillingService.getPreferredAccount: com.sakal.billingtest.merchant: Account from first account.
12-06 07:58:42.335: D/Finsky(1955): [27] MarketBillingService.getPreferredAccount: com.sakal.billingtest.merchant: Account from first account.
12-06 07:58:42.991: E/Volley(1955): [15] BasicNetwork.performRequest: Unexpected response code 500 for https://android.clients.google.com/fdfe/details?doc=subs:com.sakal.billingtest.merchant:potion_001
12-06 07:58:44.785: D/Finsky(1955): [1] MarketBillingService.sendResponseCode: Sending response RESULT_ERROR for request 8273178932293834331 to com.sakal.billingtest.merchant.
12-06 07:58:44.785: I/BillingService(3173): handleCommand() action: com.android.vending.billing.RESPONSE_CODE
12-06 07:58:45.551: E/Volley(1955): [14] BasicNetwork.performRequest: Unexpected response code 500 for https://android.clients.google.com/fdfe/details?doc=inapp:com.sakal.billingtest.merchant:potion_001
12-06 07:58:46.225: D/Finsky(1955): [1] MarketBillingService.sendResponseCode: Sending response RESULT_ERROR for request 2493329704825383333 to com.sakal.billingtest.merchant.
12-06 07:58:46.245: I/BillingService(3173): handleCommand() action: com.android.vending.billing.RESPONSE_CODE

Answer 1

OK, problem solved. It was only a matter of time... I guess it took Google's servers a while to update my additions to the developer account, but now it works and I can finally buy a potion from myself.

Now there are new problems.

1. when I select an item to buy, I first get an "Item not found" error, and when I click "ok" I see the product in google play. does this happen to anyone else?

2. I purchased several new items, I see on my google checkout account that the order is "shipped" BUT in the billing test app, under "Items you own" I don't see anything...

3. in http://developer.android.com/google/play/billing/billing_integrate.html#billing-download they suggest to

refund purchases that are made with test accounts, otherwise the purchases will show up as actual payouts to your merchant account

where can I perform the refund? in my google checkout account the "Refund some money" item is greyed out...

Does anyone know how to handle these issues?