New user name does not appear in sent email

New user name does not appear in sent email

Hi,  I sign up new zoho mail with domain with my personal name. After verification and everything I decided to change personal data  "full name" and "nick name" for company name and not my personal name. Data saved and in profile appears the new name, but when I compose a new mail and send...there is still the old name.

How to change that?

Thank you.