After submitting an image, I'm prompted to authenticate with Google - but once I do, and return, I have to re-submit the image.
Also, it does ... not do great with faces, but I also did not expect it to: https://imgur.com/a/GCLbMGp
Also, it does ... not do great with faces, but I also did not expect it to: https://imgur.com/a/GCLbMGp
For faces, enabling the "Enhance Portrait" option will yield better results.
However, the effect on your image isn't very noticeable even with the option enabled. I've tested other faces and observed a significant improvement with the option turned on. I'm currently unsure where the difference might be.