Request not successful

[truejp]

Hey there, I hope someone over here can help me! I'm having issues using this API. Sending a request like "play_sound" or "remote_wipe" always results in the "Sending notification... Failed!" message using the provided example.php with my own credentials. However, the script is able to fetch the correct Device-IDs, I dumped them via Echo and they match. That really makes me wonder what is going on, unfortunately I'm just trying to get started with iCloud APIs. The endpoints should be more or less the same, the PyiCloud-Project is using basically the same ones. Best regards