The connection verifies membership
Before starting an unlock scan, the app asks the account service whether the signed-in account has current access. It does not send camera frames, enrollment samples or the saved Mac password with that request.
A locally stored sign-in session identifies your account; it is not a permanent authorization to unlock. The local data guide explains which information stays on the device.
A failed check stops the scan
If the account request fails, the session needs a new sign-in, or membership cannot be verified, the unlock flow stops before starting its camera scan. It does not use yesterday's successful payment or a cached plan label as permission.
Use your normal Mac password to continue working. The account error can be reviewed after you are back at the desktop; deleting enrollment will not repair an unavailable service.
A successful check covers one short attempt
A successful response creates a permission held only in memory, valid for at most 15 seconds and one password-submission attempt. It is checked again while scanning and before password-entry key events.
This is not an offline grace period. The app does not continuously test connectivity after approval, so an already approved attempt can finish within its remaining lifetime if the connection drops. The next scan still needs a fresh online check.
Use account status to narrow down the problem
The Account tab includes Check plan for a signed-in account. That button checks status but immediately discards its unlock permission; it cannot preauthorize a later offline scan. Manage plan opens the configured website.
The message “Account service is not connected in this build” describes the preview's disabled configuration. Changing Wi-Fi or signing out repeatedly will not enable an unconfigured build.
Keep a practical fallback when travelling
On a flight, an unreliable connection or a network awaiting browser sign-in, plan to enter your Mac password manually. When connectivity returns, review account status and start a new scan if the connected release is available.
If the Mac password has changed, update Lunlo's saved copy separately using the password guide. For camera, permission or recognition problems after account verification, use troubleshooting.