Based on https://docs.hetzner.com/konsoleh/general/faq/account-migrat... they migrated all accounts to the new accounts.hetzner.com authentication in the summer. Sounds like that legacy login form should no longer exist.

Afaik KonsoleH is for resellers? My acccount is 10 years old, I manage 100 root and clouds servers over several accounts and organizations and KonsoleH is something I never touch (and my logins don't work there). That's not an excuse, but not all Hetzner accounts affected.