I have had this recently (configuration D), and have spoken with the technical gents at GE,
my issue was specifically with my DNS settings with my internet provider, Virgin media and GE EV chargers have had an... issue with each other recently, (so it was working, Virgin media did something, the charger no longer came online).
GE have released a firmware update that solves this issue, I think it went public over the weekend just gone (16/17 March)
If you are with virgin media, it may be worth checking to see if there is a firmware update available to you to see if you can update the system. since the fix they gave me (the beta version) it has been back to the way it should be 🙂