If the Particle Cloud authentication system down again (as per my last report 8th Oct).
I have 3 Photons here that were connecting this morning (UK time) but are now quick flashing cyan.
Looks like I also get one or two flashes of orange (not red) from time to time.
Thanks
Gary
Sorry everyone - my bad. Someone had disconnected the GSM Antenna on the WIFI hub (due to an electrical storm). All working now 
Hey there! Glad you were able to identify the problem – updated the title slightly given that the root cause did not end up being a Particle outage to prevent possible confusion.