Apex domains cannot have CNAME records.
Question and response
Question
dig povssportsbar.com. NS
Answer
povssportsbar.com. 5 NS ns-1835.awsdns-37.co.uk.
povssportsbar.com. 5 NS ns-488.awsdns-61.com.
povssportsbar.com. 5 NS ns-552.awsdns-05.net.
povssportsbar.com. 5 NS ns-1296.awsdns-34.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0