There are multiple ways of getting help.
A public mailing list for the zugbruecke project and closely related projects - including wenv and wenv-kernel - for both users and developers is available at groups.io.
There is a dedicated public Matrix chat.
Bugs and any kind of issues should be reported in the project's Github issue tracker, also see chapter on bugs <bugs>.
In addition to the previous options, paid support is available from pleiszenburg.de - Independent Scientific Services.