I don't remember my cloudflare account information

The cloudflare account for the company has been opened before, so we do not know now, and we have no contact with the previous developer. we have to access this cloudflare account because our site is not working at the moment and we need to access the old cloudflare account for its solution. how do i solve this ???

If you have control of the email address associated with that account, you can contact Support: support AT cloudflare DOT com

Or you can always set up a new Cloudflare account and add your domain to it.