Remove background color of the 3D boxes that I use as Flyer

[macsgv]

Hello, I would like to know if there is any way to remove the background color of the 3D boxes that I use as a flyer, which are transparent png.

But within ArcadeFlow they are displayed with a background color when the background of the image should be transparent.

In summary I want the 3D box to be displayed without a frame and without a background fill.

Thanks.