Apex domains cannot have CNAME records.
Question and response
Question
dig myconnectwise.net. NS
Answer
myconnectwise.net. 4 NS ns-1207.awsdns-22.org.
myconnectwise.net. 4 NS ns-3.awsdns-00.com.
myconnectwise.net. 4 NS ns-933.awsdns-52.net.
myconnectwise.net. 4 NS ns-1902.awsdns-45.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0