Hi, I had an electron with a particle sim on my old account. I unclaimed the device there and now I am trying to claim it on my new account with a 3rd Party sim.
I flashed the newest firmware and my program to the electron. Then i went through the “setup an electron w/sim card” At the last step where the electron should connect to the cloud, my electron does not get recognized. But I think my electron connects successfully to the cloud. blinks green then fast cyan then slowly cyan.
I really dont get whats the problem here ?! 
You can try to claim the device via Particle Build or Particle CLI instead.
BTW, just to make sure, you’ve got the STARTUP(cellular_credentials_set(APN, "", "", NULL)); line in place?
I tryed like 10 times over the CLI and allways got an Error. On the 11 time it worked 
But thank you for your help!