Apex domains cannot have CNAME records.
Question and response
Question
dig hypnotherapie-lemans.com. NS
Answer
hypnotherapie-lemans.com. 5 NS ns-184.awsdns-23.com.
hypnotherapie-lemans.com. 5 NS ns-413.awsdns-51.com.
hypnotherapie-lemans.com. 5 NS ns-1077.awsdns-06.org.
hypnotherapie-lemans.com. 5 NS ns-100.awsdns-12.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0