BigRock cannot add ZOHO CNAME entries

BigRock cannot add ZOHO CNAME entries

I approached bigrock to add the ZOHO CNAME and MX records to my domain. They responded back by saying that they cannot add the CNAME entry ZOHO mentioned. Below is the message from the support agent.

11:55:1507204558  Deepika U:  And mention that i cannot add CNAME for naked domain.

I am also attaching a screenshot she sent to me with this message.

Please help me on this