Trying to find DNS settings

Hi,

I’m trying to send an email campaign through Brevo. They tell me that to not go directly in spams, I should register DNS for domain authentification.

I bought my domain name through enom and manage my website through Gsuite.

At admin google com they redirect me through access enom in my settings it appears that I can only edit Domain name server 1,2,3 : I see : val ns cloudflare

Called enom and they telle me that it’s through cloudflare that I can manage my DNS parameters?

I don’t remember ever registered a cloudflare account till now, but still… Si I saked "forgot my password’ and no automatic email back.

Help!