I have the same issue that is submitted at this link:
Just tried using the Web IDE for the first time but my Photon can't seem to be located. Under devices, it says "No devices yet" and when I try to add device and paste my device id, it says "Device with this id is already present". The led is breathing cyan and I am able to connect to it via Iphone so I'm not sure what the issue is. A bit of background on my Photon, I just resolved this issue:
any help appreciated.
I logged out four times but I cannot yet add my device which is working OK with Tinker.
I am clicking on " Refresh device" but nothing happens.
If I click on ADD Device, it asks me for introduce my device ID and after that it tell me that the device has owner yet, who is myself !!!
The common suspicion in such a case is that you have got two accounts with slightly different data.
You may need to PM
@rickkas7 your device ID so he can look up which account it’s claimed to and assist you with transfering it to yourself.
BTW, if you have a working Particle mobile app and physical access to the device, you should be able to “force claim” a Photon that way too - at least this used to work.
Thanks for your answer.
Please let me know the process to “Force claim” and from “where” I should do that process.
Particle mobile app
The Particle mobile apps available via Google Play Store or the Apple App Store shoule be able to do that.