Apex domains cannot have CNAME records.
Question and response
Question
dig applefromklarna.com. NS
Answer
applefromklarna.com. 5 NS ns-637.awsdns-15.net.
applefromklarna.com. 5 NS ns-365.awsdns-45.com.
applefromklarna.com. 5 NS ns-1894.awsdns-44.co.uk.
applefromklarna.com. 5 NS ns-1445.awsdns-52.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0