Apex domains cannot have CNAME records.
Question and response
Question
dig saas-gfi.eu. NS
Answer
saas-gfi.eu. 4 NS ns106.ovh.net.
saas-gfi.eu. 4 NS dns106.ovh.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0