the image you linked requires permission to view but that issue largely comes down to settings such as denoise strength, ColorCorrection, and Third Frame Image.
It should directly output the spritesheet and the frames. You're the second person to have it output the 3-panel images instead and I'm not sure why some people have that happen
The individual files should be named along the lines of Frame-XXXX and will be located in your default folder for images. The spritesheet will be in the default folder for grids
Here's a gif I generated while writing and testing the fix: