Apex domains cannot have CNAME records.
Question and response
Question
dig missionarioteachesidiomas.com. NS
Answer
missionarioteachesidiomas.com. 5 NS ns-1094.awsdns-08.org.
missionarioteachesidiomas.com. 5 NS ns-2036.awsdns-62.co.uk.
missionarioteachesidiomas.com. 5 NS ns-267.awsdns-33.com.
missionarioteachesidiomas.com. 5 NS ns-720.awsdns-26.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0