How do I stop the NOIP DUC on Raspberry Pi

This is the system details

It is on Raspberry Pi 4

NextCloudPi version v1.34.7
NextCloudPi image NextCloudPi_09-05-20
distribution Raspbian GNU/Linux 10 \n \l

it has a running noip dynamic update client - I don’t think I installed it
i am trying to make it update an additional domain
but it does not let me because the file is running / busy

  • how can i stop it the file that is in /usr/local/bin/noip2
  • enter the domains
  • restart it?

Thank you