Apex domains cannot have CNAME records.
Question and response
Question
dig thekidsdiary.com. NS
Answer
thekidsdiary.com. 5 NS ns1.thekidsdiary.com.
thekidsdiary.com. 5 NS ns2.thekidsdiary.com.
Authority
The response has no authority records.
Additional
ns1.thekidsdiary.com. 5 A 185.185.49.230
ns2.thekidsdiary.com. 5 A 217.13.101.212
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0