Support requests are not currently being accepted through the SourceForge ticketing tools. For help with using zsh, please send email to the mailing list
For other problems, the shell is being maintained by various (entirely self-appointed) subscribers to the mailing list
so mail about any issues (bug reports, suggestions, complaints...) related to the development of the shell should be sent there. If you want someone to mail you directly, say so. Most patches to zsh appear there first.