Apex domains cannot have CNAME records.
Question and response
Question
dig simplimation.com. NS
Answer
simplimation.com. 2 NS dns2.cloudns.net.
simplimation.com. 2 NS dns1.cloudns.net.
simplimation.com. 2 NS ns1.simplifywebhost.com.
simplimation.com. 2 NS ns2.simplifywebhost.com.
simplimation.com. 2 NS dns6.cloudns.net.
simplimation.com. 2 NS dns5.cloudns.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0