Thanks for your feedback!
In the Missions tab, there was supposed to be a Close button in the lower right corner that is initially active, hence why it's triggered when you press the Space bar. Let me know if that button is not visible or not working for you.
As for the downloaded images, it would be the whole picture without text (no name, no bio, no effect). If that is not working or the image produced is cropped or blurry, kindly share the produced image. As an example, I have tested it and attached the produced image of CPT Blossom Nightshade below (same Recruit shown in the game page).