Hmm... See below for latest error log, returns same result after resetting egg.
My network is a WiFi hotspot card, but I've got 3 other eggs all currently working fine and logging data using the same network, same SSID/pwd.
Info: Connecting to Access Point with SSID "SSID"...OK.
Info: Request DHCP...OK.
Info: IP Addr: 192.168.1.2
Info: Netmask: 255.255.255.0
Info: Gateway: 192.168.1.1
Info: Erasing mirrored config...OK.
Info: Writing mirrored config...OK.
Info: Resolved "update.wickeddevice.com" to IP address 45.55.159.249
Info: -------------------------------------
Info: Integrity Checks:
Info: File Size: 318054
Info: CRC16 Checksum: 56780
Info: Download Complete
Info: Total Bytes: 212
Info: File Size: 12
Info: Checksum: 45818
Info: Duration: 5570
Info: Signature matches, skipping HEX download.
Info: Resolved "mqtt.opensensors.io" to IP address 52.209.152.90
Info: Connecting to MQTT Broker with Client ID "egg00802fbb78090122" using Authentication...OK.
csv: Timestamp,Temperature[degC],Humidity[percent],PM[ug/m^3],PM[V],Latitude[deg],Longitude[deg],Altitude[m]
csv: 01/01/1970 00:01:30,---,---,---,---,---,---,---
Info: Connecting to Access Point with SSID "SSID"...OK.
Info: MQTT publishing to topic /orgs/wd/aqe/heartbeat/egg00802fbb78090122...Failed.
Error: Failed to publish Heartbeat.
csv: 01/01/1970 00:02:30,---,---,---,---,---,---,---
Info: Connecting to Access Point with SSID "SSID"...OK.
Info: Connecting to MQTT Broker with Client ID "egg00802fbb78090122" using Authentication... +------------------------------------+
| Welcome to Air Quality Egg 2.0 |
| Particulate Sensor Suite |
| Firmware Version 2.1.9 |
+------------------------------------+
Compiled on: Oct 13 2016 15:16:41
Egg Serial Number: egg00802fbb78090122
