I tried to create a low polygon objects but I really don't know how to loft them properly.
I was hope to get seamless edge look likes in (B) picture but all I get is (A).:(
They look likes they...

Thank you! that fixed it....and I thought Preferences>Edit>Reset Default will reset everything I accidentally click.

This never happen to me before. I don't know if I accidentally turn on/off something.
When I loft the polygon object create with 2 curves, The object usually connect with the curve and move along...