Have you tried a power cycle? Does it still answer ping, but not HTTPS?
Have you saved a backup configuration since your last changes? You may
need to try a factor default (indented button on front) for 8+ seconds, and see
if you can reach it at 192.168.0.2 or not. If so, restore your backup.
If not, the light bulb in my living room that I never turn off, went out last night. =:^(
Sorry for the lame attempt at humor on Fri before Labor Day in US vacation, but
sadly too, the ZD1000 has reached it's Last Day to Repair or Replace = 8/31/2016
according to the end of sale documentation.https://support.ruckuswireless.com/documents/177-zd1000-end-of-life-notification