Particle Electron Failing to connect to the cloud

I am setting up my particle electron and it has been stuck on flashing blue for the past 14 hours. It only flashes cyan for like 5 second and then goes back to flashing blue.
I have read all the issues in the forum, but none seems to be working for me.
I am in a place that has great cellular coverage so I don’t know why it is failing to connect to the cloud.

please help!