Apex domains cannot have CNAME records.
Question and response
Question
dig casasapori.shop. NS
Answer
casasapori.shop. 5 NS ns-1332.awsdns-38.org.
casasapori.shop. 5 NS ns-37.awsdns-04.com.
casasapori.shop. 5 NS ns-1680.awsdns-18.co.uk.
casasapori.shop. 5 NS ns-1506.awsdns-60.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0