A control lock can intentionally restrict changes while leaving some indicators visible. The permitted buttons and unlocking method depend on the exact model.
Understanding this situation
Look for the documented lock symbol rather than pressing random combinations. Some machines retain the lock after a programme or power interruption; others behave differently. This is separate from a physical door lock that contains water or moving laundry.
A useful next step
Use only the manual's normal control-lock instructions. Do not confuse an unlocked panel with permission to force the door open. If the expected unlock method has no effect, report the symbol and model instead of removing the control panel or bypassing switches.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.