Apex domains cannot have CNAME records.
Question and response
Question
dig restartenergy.ro. NS
Answer
restartenergy.ro. 5 NS courtney.ns.cloudflare.com.
restartenergy.ro. 5 NS jake.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0