Particle Electron not connecting to cloud

Hi there. Wondering if someone can help me with my Particle Electron. its turning on and flashing light blue and will flash red every 5 sec. on the page where i used to be able to access it. it no longer shows up i’ve paid the sim card bill even know i have a 3 month trial.

if any one could help it would be awesome or if its something to do with the device and i should return.

Thanks Ben