Bulb = Green Star Energy?

Hi folks, new prepayment sign up here, almost through the switching process. Have received my new key as promised in my emails from Bulb but the key and accompanying letter are marked as Green Star Energy? A quick google seemed to suggest they were separate companies, so I’m a little confused. Can anyone shed some light on this for me?

Just in case anyone else comes across this issue, here’s what happened…
Bulb use a third party provider to send the actual prepayment keys, this company sent me the wrong providers key. Very happy to say that after calling the customer support line, Bulb’s rep Ahmad was able to resolve the situation very quickly and I am now a full, happy customer of Bulb