Unable to Connect to Unifi CloudKey

When attempting to connect to a Unifi CloudKey via the app, it times out at “Requesting SDP offer...”:

Additionally, the web interface for the CloudKey does not accept its credentials. However, it is possible to establish a secure shell (SSH) connection to the device.

This may be caused by corruption due to power failure. To remedy:

1. Open an SSH session and reset the device to factory:

   ssh [email protected]

2. Enter the password when prompted.

3. Enter:

   ubnt-systool reset2defaults

4. When the device has restarted, open the web interface and restore a recent backup.

If reset2defaults displays an error, use ubnt-systool reboot to reboot first.