Apex domains cannot have CNAME records.
Question and response
Question
dig heidipotterreporting.com. NS
Answer
heidipotterreporting.com. 5 NS ns2.heidipotterreporting.com.
heidipotterreporting.com. 5 NS ns1.heidipotterreporting.com.
Authority
The response has no authority records.
Additional
ns1.heidipotterreporting.com. 5 A 157.254.12.121
ns2.heidipotterreporting.com. 5 A 5.181.190.38
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0