Does FaceFilter 3 not run on MacOS Catalina (or above version)?

When applying an expression, the changes don’t' seem to be totally correct.

Can I select both two kinds of expression?

Can I use the Undo function in Reshape to return to the status before Keep Result? If yes, how many times can I do that?

In the Reshape section, is it possible to apply my facial shape modifications to all of the subjects in a photo?

What should I do if my face is blurred after using the Skin Smoothing function?

Why do I not see any changes when I apply any skin refinement?

How can I add a custom color to my facial and body skin?

Why can't I remove all the red eyes in my image via "red eye reduction" function?

Why does the size of the image not match the original size in Face Filter 3?