Not able to access Account

I have informed Bulb that I have moved out of my property. I have passed my referral link to my old housemate who signed up and I now want to switch to Bulb for my new property. However I am not able to access my account anymore, just the community! We are due a refund for the old property which I need to pass to my housemate and I am also due the £50 credit for referring them, and I need access to our bills. Can anyone help?