Hello there,
Our server public IPs are: 209.222.135.56 and 209.222.135.57. We usually send a few hundred thousand messages (push notifications) everyday to our Android Users through GCM. Since around 5:30pm EDT today, our messages are going through but we are not getting a confirmation. We are getting 502 Bad Gateway Error.
It looks like Google is blocking our IP.
Android App Name: Alarm.com
Could someone help us with this?
Thanks,
Birat