Newest Stable Snap is at Snap Candidate channel:
https://github.com/wekan/wekan/discussions/5385
Later, when xet7 gets database migrations working, newest version will be added to Snap Stable channel too.
OLD INFO:
https://uappexplorer.com/snap/ubuntu/wekan
$ wekan.help
All of commandline help is also in this wiki, categorized to their own wiki pages.
See also Wekan documentation