Apex domains cannot have CNAME records.
Question and response
Question
dig kumanofude-selectshop.com. NS
Answer
kumanofude-selectshop.com. 3 NS ns-829.awsdns-39.net.
kumanofude-selectshop.com. 3 NS ns-870.awsdns-44.net.
kumanofude-selectshop.com. 3 NS ns-889.awsdns-47.net.
kumanofude-selectshop.com. 3 NS ns-1869.awsdns-41.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0