I've just set up Google Checkout PHP Sample code (1.3.1) with no changes except my merchant_id and key of course. I'm testing it in sandbox.
Purchasing demo in works fine but there is problem with response handling.
The only notifications I'm getting are 'new-order-notification'. No matter what I do with the orders - manual charging, auto charge (set in merchant settings), or just waiting - I only get 'new-order-notification' several times for each order.
googlemessage.log confirms this as there are only this type of notifications logged.
Is this a problem with sandbox or I'm doing something wrong?