/usr/local/bin/noip2 -C

guide https://documentation.storj.io/dependencies/port-forwarding says

You’ll then be prompted for your NoIP username and password, as well as the hostnames you wish to update. 

however I am presented with two questions after running /usr/local/bin/noip2 -C

ubuntu@ubuntu:~/noip-2.1.9-1$ sudo /usr/local/bin/noip2 -C

Auto configuration for Linux client of no-ip.com.

Please enter the login/email string for no-ip.com  xyz@gmail.com
Please enter the password for user 'xyz@gmail.com'  *********

Only one host [mynode.hopto.org] is registered to this account.
It will be used.
Please enter an update interval:[30]  30
Do you wish to run something at successful update?[N] (y/N)  n

New configuration file '/usr/local/etc/no-ip2.conf' created.

please advise. thanks.

I think they where self explanatory, so you are good