Apex domains cannot have CNAME records.
Question and response
Question
dig aero-poolandspa.com. NS
Answer
aero-poolandspa.com. 2 NS ns-235.awsdns-29.com.
aero-poolandspa.com. 2 NS ns-863.awsdns-43.net.
aero-poolandspa.com. 2 NS ns-361.awsdns-45.com.
aero-poolandspa.com. 2 NS ns-1196.awsdns-21.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0