Apex domains cannot have CNAME records.
Question and response
Question
dig slotmaldives.com. NS
Answer
slotmaldives.com. 5 NS ns-528.awsdns-02.net.
slotmaldives.com. 5 NS ns-1008.awsdns-62.net.
slotmaldives.com. 5 NS ns-645.awsdns-16.net.
slotmaldives.com. 5 NS ns-544.awsdns-04.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0