Dear Zoho Support team,

i had create a new zoho support account and would like to change the email alias setting.

But when i go to setup > channels > email it show something as below: 

when i try to click save, it say " Domain name already exists. Kindly provide the new Domain name."

then i try to key-in others name and click save it say " Error in mail account creation. Please try later"

it seem different from what i see from user guide at this link : https://www.zoho.com/support/help/setting-up-email-channel.html

can i know how should i add the email alias under this setting?

Thanks