question

Hi, there are times when i receive the notification but there are other times when I only see a log like this 03-02 10:38:59.728 451-2896/? D/ActivityManager: single user service: com.amazon.device.messaging 03-02 10:38:59.730 451-2896/? D/ActivityManager: app = com.amazon.device.messaging, has single user service, setting process record. And nothing else I'm sending from the server something like this { "name": "Adm Message Channel", "hostname": " MacBook-Pro-de-XXX.local", "pid": 75198, "level": 30, "data": { "message": "", "type": "10", "extra": "{"teacher":"56afc5fbd0262342ce0e8942","deviceToken":"amzn1.adm-registration.v3.Y29tLmFtYXpvbi5EZXZpY2VNZXNzYWdpbmcuUmVnaXN0cmF0aW9uSWRFbmNyeXB0aW9uS2V5ITEhbUZ4MXRPekJHQVl1QUNwRWZ3WFQxc1lRNm1jT3Y2ckkzOXpIWEtEZWdBMU1EL01iUWJmVXFjUW1YMnBMQ1lsQ1h1bkxPSTlVSTIwc2N5Q2YxL0FvTG9kbk10Rk9ja0xPcnB5UnBjYlk0c04rMUZWZ0h1c2ZOb2NTS2t6ejdQQUtRUnMxeVhVcjN6ajlBOWE5V2ZBWkRPZElaMVJ2ZlJmeVZhUzV2aDdYck9ERXJOSGkwekdIbFdMOE5JNjlES1lNMExocWwwSzZvNG9PM012Zk9WK0JhSlFkQXOT05IUEtNNExsNEgwemd4TDFVaGJUenZMRDQ3NE9oZDd6SkR0R25IbmpjNGlyMVZVM0t5eGU0VThEWFAzY3ZmQldITFdvbGRLUHFvZkRqVnUzbFNGd1lzeE9qd1FIbHRzaFpJbG1PcW5LT0E4d0NlSGh0TlhlNldtTDRsb0YxbmxvSTlqa2dzUkZNZHl6Y0RBPSFMVDdRV09UUEMyanN6azhTcXRNYnlBPT0","deviceType":"amazon"}", "actionType": "unassignDevice" }, "expiresAfter": 86400, "msg": "", "time": "2016-02-29T18:19:26.891Z", "v": 0 } Why I'm not receiving the message? Thanks Ed