Beware the Atlassian's SSO "2 factor authentication" (2fa).
I remember asking them every month years back their hand over to Atlassian - to create / enable backup codes functoonality.
Several months ago after changing countries and phones I discovered that my backup codes didn't work.
Their "support" offered me a "solution" - to delete all my boards associated with my email so that I could create fresh ones.
Zero apologies, zero explanation as of why my perfectly double-backed up 2FA codes were not working, all blames on me the user.
There were sensitive details for approx 16 projects collected daily over the span of 5 years.
That SSO 2FA is flawed the same way across all Atlassian products.
Never again would I trust my data to Atlassian.
WeKan is open source and welcome.