Apex domains cannot have CNAME records.
Question and response
Question
dig devilstowerkids.com. NS
Answer
devilstowerkids.com. 2 NS ns-1934.awsdns-49.co.uk.
devilstowerkids.com. 2 NS ns-1494.awsdns-58.org.
devilstowerkids.com. 2 NS ns-780.awsdns-33.net.
devilstowerkids.com. 2 NS ns-1810.awsdns-34.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0