Apex domains cannot have CNAME records.
Question and response
Question
dig overbattlegames.store. NS
Answer
overbattlegames.store. 4 NS ns-437.awsdns-54.com.
overbattlegames.store. 4 NS ns-68.awsdns-08.com.
overbattlegames.store. 4 NS ns-178.awsdns-22.com.
overbattlegames.store. 4 NS ns-1885.awsdns-43.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0