Do you have questions about qaul.net? Trouble setting up your client? Or do you want to help out with development? We have an active community and development chat on matrix: #qaul.net:matrix.org.
For more long-form discussions, announcements, and work-logs there is also a mailing list, hosted on lists.sr.ht/~qaul/community. We would be happy to answer your questions on either of those platforms.