UI Mask Component doesn't work for me.

Is mask working for anyone else? I try to use it and it doesn’t seem to work. I have two masks in this scene, one should be in the shape of a small bison and the other is the red rectangle. I have provided the Inspector information for each one. Can anyone tell me if I’m doing something wrong?

Never mind. Found out that it had to do with my Build Settings.

I switched it out of Android and it worked.