In my eyes you should claim your Photon with the following steps again by using Particle CLI.
Pre: Open your router for acceptance new devices.
Put the Photon into Listening mode (blinking blue) by holding down SETUP until it blinks blue if it is not already blinking blue. Then issue the CLI command:
Save the Device ID; you’ll need it later. Also include that in your reply so I can check the claiming status on the cloud side.
Now enter the command:
particle serial wifi
This will allow you to configure your Wi-Fi network.
Reset the Photon. The main status LED should proceed through white, blinking green, blinking cyan (light blue), fast blinking cyan, to breathing cyan. If it does not get all of the way through, include that information in your reply along with copying and pasting the command prompt output. Also, if you get any other colors after fast blinking cyan, including red or orange blinks, contact the Particle-Support.
Only if you get all the way to breathing cyan:
particle device add YOUR_DEVICE_ID