Welcome to None & Password reset with public IP

Hi Team,

I installed ERPNext on AWS instance.

While I am adding new USER , it will sent one welcome message along with updation for password reset.

I have two query on this process
1 - How to modify welcome subject line with 'Welcome to origination"
2- for password reset it show

Welcome to None ‘Origination name instead of none’


A new account has been created for you at http://localhost:8000.( need my public ip like http://x.x.x.x:8000)

Your login id is: *******@%%%.com

Click on the link below to complete your registration and set a new password.

Complete Registration

can also copy-paste this link in your browser http://localhost:8000/update-password?key=*************************

Please help …