"the Item You Were Attempting To Purchase Could Not Be Found"

I google it again and again but there is no useful information for me. here is the situation: 1. the products are active. 2. I tested my apk by testing account. 3. I have uploaded

Solution 1:

Have you tried everything on the checklist here? http://developer.android.com/google/play/billing/billing_testing.html#billing-testing-test