Hi Raheel - hope you're keeping well!
I think there's a bit of confusion, so we'd like to try to clarify.
Your site isn't currently integrated with Ezoic. Therefore, you cannot use the 'Activate Via Ezoic Account' option of the CloudFlare app. In order to activate cloudflare via the Ezoic account, your site would need to be NameServer integrated to use that tech.
Instead, if you're intending to integrate the site with Ezoic via Cloudflare, you would first need to make sure your site is already using CloudFlare name servers. This guide explains that process: https://support.ezoic.com/kb/article/how-to-integrate-with-ezoic-using-cloudflare