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: If you are a Cloudflare account holder, please submit a new support request from the email address you used to register your Cloudflare account. You should open a ticket directly through the Cloudflare dashboard following these steps: 1. Log in to your Cloudflare account and click on “Support” in the top right corner, from the drop down select Help Center. 2. Click on your name in the top right corner, and in the drop down menu select “My activities” where you will see your existing requests. 3. Scroll to the bottom of the “My Requests” page and click “Submit a request”.

Or you can always set up a new Cloudflare account and add your domain to it.
https://support.cloudflare.com/hc/en-us/articles/204615358-Moving-domains-between-Cloudflare-accounts