You can contact the website team via email to website at cs-conf.de.
Discussions about the website content should go ->here.
For questions and discussions with other users of Csound, use the Csound Mailing List or the Csound Forum.
For discussions with the developers, use the Developer Mailing List.
Cabbage, CsoundQt, Blue have their own communities. Please look at their websites for mailing lists or forums.
If you found a bug, either in Csound core or in one of the frontends, please look at -> this page.