All services are working fine from our end. Please make sure your internet connection is working properly, also please make sure that message is being send and not scheduled for future delivery . Also, please check the push logs and see what is coming up there.
To check the push logs, login to AppHQ Management Console >> Click on Push Notification >> Push Logs >>Select your app to see push logs and share with us.
Let me know if it helps.
Himanshu Sharma