Sun Light not coming into the room, the shadow of window frame is not on the floor

Sun Light:
Hello everyone, i am new in Sketchup Community. I heve problem with Sun light. When render sun light is not erntering into the room. Also the shade of window frame is not on the floor.

Could you share your model for further inspection?
First thought, if your glass has a thicknes, maybe the inside was painted non transparent?
Second thought, maybe you have set certain components to not cast or not receive shadows?

Maybe you accidentaly changed one of these settings?
For example, you can turn on/off the ability to receive shadows, and/or turn on/off casting of shadows.
su shadow casting

Additional possibility: Is your “room” below the SketchUp “ground plane”?
Post your model to get better answers…