Apex domains cannot have CNAME records.
Question and response
Question
dig saiwai-pharmacy.com. NS
Answer
saiwai-pharmacy.com. 5 NS ns1.saiwai-pharmacy.com.
saiwai-pharmacy.com. 5 NS ns2.saiwai-pharmacy.com.
Authority
The response has no authority records.
Additional
ns1.saiwai-pharmacy.com. 5 A 62.171.142.121
ns2.saiwai-pharmacy.com. 5 A 62.169.19.112
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0