Unable to Verify Subdomain – Locked to Another Cloudflare Account

I tried adding a subdomain, but it says it’s already associated with a different account or team. I can’t log in or find the email linked to it. Is there any other way to verify my domain, which is currently hosted on Cloudflare?

and I already did this: [Support Guide] "another site is using this domain" Verifying domain ownership for Netlify production domain

I’ve sent this to the helpdesk. You should hear back soon.