I have been using Particle Photon in multiple IoT projects and it works fine every times mostly. But today i am facing a new problem for every Particle Photons; each of them are sending multiple “spark/device/diagnostics/update” events after they switch on!
A few days ago there was a bit of a hiccup in regards to webhook handling. It is possible this is related to the issue at hand that you are seeing.
We have an outstanding issue at the moment that you can see at the top of our status page. I suggest you keep an eye on it as it develops and let us know if you continue to experience issues post status page resolution.
Another topic is following this conversation, you can find my post there at:
Over 20 Devices just went down