Apex domains cannot have CNAME records.
Question and response
Question
dig myvanillashop.com. NS
Answer
myvanillashop.com. 5 NS ns-1954.awsdns-52.co.uk.
myvanillashop.com. 5 NS ns-539.awsdns-03.net.
myvanillashop.com. 5 NS ns-12.awsdns-01.com.
myvanillashop.com. 5 NS ns-2032.awsdns-62.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0