Your Kling 3.0 Omni does not work. When you add more than one image in the prompt using the @image tag like Kling uses, it will grey out the generate button and say there are too many elements.

I have ran this exact prompt in Kling on their interface and it works.
Firefly lets me upload the images and tag them in the prompt. but as soon as I tag more than one image, the button goes grey.
Maybe i am doing something wrong but I dont see any settings that would change it.

You should also add the “Use as Start Frame” option to Onmi like Kling uses on their interface, but that is not the problem here.

Thanks!
--Matt