You don’t use the no-ip IP, you have to use the hostname that you have registered with no-ip.
Also you need their ip updater: https://www.noip.com/download?page=win
I would try with firewall off to make sure the firewall is not interfering.
The ip updater will take care of updating your ip. You will enter your no-ip in the nodes config as ip.
Check also here: No-IP changing IP address?
The idea is: The local ip updater detects any ip change and informs the DDNS service about your actual ip. Anyone calling your DDNS hostname will then receive your actual ip from them and can connect to you.