The shadow of the asset blobshaow doesn't work normally in unity.Picture

It's because there's a shadow on a very large area. There are two cases.

(1) The BlobShadow Projector is too far away from the area where it will shadow. I used the BlobShadow Projector to draw the shadow of the character. It's drawn like this when it's close to the ground.

But if the character is far away from the shadow, it is drawn like the picture below. As the character looks like a dot in the distance, the shadow is blurred in a wide area.

(2) Or even if you modify the value of the fieldOfView, you can adjust the area you draw, but if you look at the image you uploaded, it's applied as 30, so I don't think that's the problem.