As said in the previous post, an updated version of NCT is on GitHub (click here). The new maintainers (shoutout to Karoline Huth and Don van den Bergh!) of this package have improved this page. You can find

• R code to use and/or install the package
  • how to report bugs, ideas for new features, contribute to new developments
• how to contact the maintainers

Good luck with your research!