Apex domains cannot have CNAME records.
Question and response
Question
dig myetol.com. NS
Answer
myetol.com. 5 NS ns-538.awsdns-03.net.
myetol.com. 5 NS ns-1846.awsdns-38.co.uk.
myetol.com. 5 NS ns-416.awsdns-52.com.
myetol.com. 5 NS ns-1685.awsdns-18.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0