Are you aware that if you provide your client with the cPanel login information, they will be able to access your Zillionkinghost client account?
Yes, they will.
If this situation occurs, your client will be able to access all the websites you registered at zillionkinghost.com.
To prevent this, you need to perform the following changes:
1. Log in to your zillionkinghost account.
READ MORE:
https://zillionkinghost.com/blog/hosting/single-sign-on.html
