On a new box the home-network login now also finds the account number (accountInfo) and registers the box as a device, so no email, password or account number is needed. The new device id is saved straight away, so a retry reuses it instead of adding another one. Error pages from the new servers (including HTML 401s) are retried. Tested live on 2026-11-07 with a fresh profile; the test devices were deleted afterwards. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>