Hi Dave,
The H500 problem is solved after hard resetting the AP for several times. The country code is TN by the way.
Rectifying the NTP on the SZ100 solved the problem for DHCP on many WLANs. Thanks!!!
As for the heartbeat loss for R500, I am on version 3.4.2.0.275, the recommended one on the Ruckus Website.
Thanks