Extreme Networks

anyway, I brought one unit back home to try with my home router, the problem persists as well.  There are no firewall at all, in any of my environment.

I have logged in a support call, hope there is an outcome. 

I have a similar issue as well, and the APs were already at its latest hive OS running on NG. As soon as a mobile device connects to AP130, WhatsApp could not sustain connection to send out messages, after a while, all the messages gets unsent. Rebo...