Apex domains cannot have CNAME records.
Question and response
Question
dig doubleyourdate.com. NS
Answer
doubleyourdate.com. 5 NS ns-611.awsdns-12.net.
doubleyourdate.com. 5 NS ns-1123.awsdns-12.org.
doubleyourdate.com. 5 NS ns-1281.awsdns-32.org.
doubleyourdate.com. 5 NS ns-1630.awsdns-11.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0