I think it's looking good, everything is coming together.
But you still have a more yellow Robocop on the front and a more blue on the back and in my opinion the difference is too big to keep it like this. On the suit it's obvious and you can sse the difference in his face/skin tone/lips as well.
And I'd darke the bright area behind the sinopsis some more, it's still a bit difficult to read.
On your stills I'd adjust the ones on the right some more. They all could need some contrast, brightness and lights compared to the pictures on the left and all other images on your cover.