delete the organization

[N]

I want to delete the organization, but no matter what I do, I can't remove it.

[Rebekka Heilmann _viadee_]

Hi @nozawa and welcome to the Community,

after cancelling/removing all products from your organization there are grace periods. Depending on your billing engine it could be up to 60 days.

Only after that you can delete the Organization. Refer to this documentation for details: Delete your organization | Atlassian Support

Note, that you cannot remove products from your Org before their license runs out. The grace period therefore only starts as early as the longest valid license runs.