Apex domains cannot have CNAME records.
Question and response
Question
dig teesmily.com. NS
Answer
teesmily.com. 5 NS ns-730.awsdns-27.net.
teesmily.com. 5 NS ns-734.awsdns-27.net.
teesmily.com. 5 NS ns-1651.awsdns-14.co.uk.
teesmily.com. 5 NS ns-605.awsdns-11.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0