Apex domains cannot have CNAME records.
Question and response
Question
dig tapfiliate.com. NS
Answer
tapfiliate.com. 4 NS ns-910.awsdns-49.net.
tapfiliate.com. 4 NS ns-292.awsdns-36.com.
tapfiliate.com. 4 NS ns-1772.awsdns-29.co.uk.
tapfiliate.com. 4 NS ns-1028.awsdns-00.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0