Apex domains cannot have CNAME records.
Question and response
Question
dig plastrade-technology.com. NS
Answer
plastrade-technology.com. 4 NS ns-468.awsdns-58.com.
plastrade-technology.com. 4 NS ns-437.awsdns-54.com.
plastrade-technology.com. 4 NS ns-380.awsdns-47.com.
plastrade-technology.com. 4 NS ns-1147.awsdns-15.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0