It kmight be useful, but it hangs on testing hte connection with my DS.
I guess it's because of the A2F authentication, but the extension provides no feedback and even if it does, it looks like it's not supporting this type of authentication and only that would make it deserve zero stars.
Yes, two factor authentication for DS is not supported and probably never will. You can create/use a dedicated user account without 2FA which has access only to the DownloadStation and no other privileges. If such an account would be hacked, the possible damage which could be done would be very limited.