The reason installers say to wait 24hours is to enable them to get to the next job, nothing else. Fridges and freezers require time for the oil in the compressor to settle; about an hour.
The cycle settings vary from 40 degrees Celsius to 65. However, the water is staying cold through the whole cycle. Grease and milk based food not cleaning from dishes properly.
lock maybe locked put something in lock slot pull handle and pull on lock to release. if it does it again look at hing pins. pick up on outer door edge if moves bad pin