Apex domains cannot have CNAME records.
Question and response
Question
dig 5starfreeware.com. NS
Answer
5starfreeware.com. 5 NS ns-78.awsdns-09.com.
5starfreeware.com. 5 NS ns-44.awsdns-05.com.
5starfreeware.com. 5 NS ns-1608.awsdns-09.co.uk.
5starfreeware.com. 5 NS ns-898.awsdns-48.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0