Stuck in the business setup stage

Stuck in the business setup stage

I've had a personal account with you for a while and wanted to upgrade to a business lite subscription.

I got as far as verifying my ownership of the domain by html and how I am completely lost. The control panel doesn't show the domain that I verified and when I add try to add it, it tells me the domain name already exists.

Where do I need to go and what do I need to do to get back on track?

Thanks,

Andy