https://platform.activestate.com/dev-tools says “Looking for an older version of Komodo?
For now, you can still access your past versions and licenses using the old account system.”
It doesn’t seem to be the case, I’m afraid
When versions of Komodo go EOL they get archived. That breaks old download links, which because they’re for EOL versions, do not get updated.
Send a message to support@activestate.com and mention the version number you want. We can show you how to get it.