Apex domains cannot have CNAME records.
Question and response
Question
dig traderco-op.com. NS
Answer
traderco-op.com. 4 NS ns-1495.awsdns-58.org.
traderco-op.com. 4 NS ns-1966.awsdns-53.co.uk.
traderco-op.com. 4 NS ns-1536.awsdns-00.co.uk.
traderco-op.com. 4 NS ns-1972.awsdns-54.co.uk.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0