Hi
I do not speak german. I have translated your post
ZitatIn a test order, the customer receives a confirmation e-mail for all other payment methods. Only when the mode of shipment "Amazon" not.
ZitatSince my shop does not run over "https" but only about "http," the employee of Amazon that I "Merchant url" does not therefore need and we have this simply omitted. it may have something to do?
in this case you have to publish the amazon SYSTEM plugin. Have you done it ? and set the number of seconds to poll the IPN.
in the payment plugin
ERP must be off
do you have Asynchronous or Synchronous ?
Because if it is asynchronous, the system plugin will trigger the amazon IPN and the order status will change after some minutes.
I hope this will help you.