If your Garadget is unable to connect with LED fast blinking cyan with an occasional red, then its encryption key needs to be refreshed. Please contact Garadget via a PM (personal message) to arrange the repair.
Those who are comfortable with technology are welcome to attempt the process at home. It only takes a minute, but the software takes longer to setup first time. The relevant discussion can be found in the Particle community board.
You'll need driver, command line utility and public encryption key.
The commands to run:
dfu-util -d 2b04:d006 -a 1 -s 2082 -D cloud_public.der
particle keys server cloud_public.der
particle keys new photon
particle keys load photon.der
particle keys send _[device id]_ photon.pub.pem
where [device id] you can be found in the client apps or by running
particle identify command while device is in the listening mode.
Please post your questions and help requests relevant to above process in this thread.