It is not possible to amend the status bar, which means that the date and time cannot be hidden.
No, after a factory reset, the password on the device remains activated.
For end-customers, the device password should be in the documentation provided by the electrical engineering firm. If this is not the case, please contact your specialist installer as the device is built-in and therefore you cannot access it.
Each X1 user receives their own password, which is stored in the app. There is no password protection for individual functions (as of app version 1.1.49).