I got it working using the buyer option but not with the author/sale.
Can it be, that it only works with keys of my items? I just have keys from purchases I made for testing. With this key, I always get “No content 404” exception. Also the API page results in “No content”.
I know that the code is working, because it works with this url
Is there any way to test it? Or do I need to purchase my own item to make a final test?
Thanks a lot!