Apex domains cannot have CNAME records.
Question and response
Question
dig crecerjugando.edu.do. NS
Answer
crecerjugando.edu.do. 2 NS pns41.cloudns.net.
crecerjugando.edu.do. 2 NS pns42.cloudns.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0