Is your HD100 a Vivint branded camera?
If this is you, and you can access the camera via LAN/IP, you may have a firmware issue. Usually these are locked out, and not accessable via IP/LAN.
Post the firmware version of the camera, and the Alarm.com sticker on the camera itself. (That way SuretyCAM can check it with ADC to see if the firmware is what it should be)
I had a Vivint branded V520IP with a firmware issue, and had to have ADC reflash the proper firmware to make it work properly (Vivint uses a different ADC firmware for its Sky panel cameras, so all the newer ADC cameras that are Vivint branded may have firmware compatibility issues).
Vivint 520IR ADC firmware: IP8136W-ALAM-0100m2
Regular 520IR ADC firmware: IP8136W-ALAM-0100e
ADC reflashed 0100e to my cam, and all issues fixed.
In any event, I suspect you have a firmware incompatibility issue. You may want to return/exchange your HD100…especially if it is a Vivint branded version.
More and more people who buy the Vivint branded ADC/2GIG cameras will have problems due to the different firmware that Vivint is now using for the onboard DVR and M2M cloud backend user interface. The sky panel still uses the 2GIG equipment, but runs a modified version of ADC IP cameras to work with the hardware which is no longer compatible with the old ADC backend that everyone else requires.