Apex domains cannot have CNAME records.
Question and response
Question
dig jennymccormick.com. NS
Answer
jennymccormick.com. 5 NS ns-409.awsdns-51.com.
jennymccormick.com. 5 NS ns-1951.awsdns-51.co.uk.
jennymccormick.com. 5 NS ns-1432.awsdns-51.org.
jennymccormick.com. 5 NS ns-953.awsdns-55.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0