Cloudflare already have an account

I tried enabling cloudflare for my website, but ended up getting this message “CLOUDFLARE ERROR : Sorry there was a problem activating cloudflare for this domain or the email address [email protected], this is normally caused by the email address or domain name already existing on the cloudflare system.” I had an account before, but there is no website linked to it now. How can I enable cloudflare for my new website?

You can try signing up with Cloudflare directly.