Advance Surface Modeling - SolidWorks Ring Design

Here is 3D part file.
yadi.sk/d/rbT-CHnIUW0E_g
I had some trouble with filled surface to creating continous surface but after I made some differences you can see on 3D File.
Regards.

[@monolito5153]

Bro, thank you very much!

[@3D-World]

Welcome dear 😉

[@charlesorodio4070]

The first filled surface doesn't work for me. It curves inwards for some reason. Any idea why?