The Adobe Firefly free portrait generator gave me back as a result one of the photos I submitted as reference, without any changes. It says it uses 10 credits, so if that's true, I'd like the 10 credits back, please. Thank you!

I followed the easy instructions and uploaded 4 images as reference, gave a prompt - which did describe one of the photos I submitted pretty well, and that’s the result I got back, with no changes at all based on the other 3 images provided.