[Silverwing]

Hello everybody, I am very new to CFD. Right now I am facing this problem. I have two concentric ellipses being trimmed with lines parallel passing through the small ellipse's apogee and perigee. I attached an image below as an illustration. I try to use Fluent to generate a structured mesh with face meshing. However, there is a blue icon popped up in front of the face meshing. I assume something happened makes the face meshing ineffective. Does anybody know how to solve this issue? If you have any advice, I would be really appreciated.