Cause not known.
Replace the damaged sealing ring with the sealing ring supplied in the packaging.
The sealing ring on the connection to the spout is damaged. The connection is leaking.
Replace the damaged sealing ring with the sealing ring supplied in the packaging.
Realign the appliance door, see figure.
To move the door towards (1), turn the screw (1).
To move the door forwards or backwards, turn the screw (2).