I play the android version and I just recently download the last version. First time playing it, also about the new CG I think I misunderstood when appears it, and about the sprites they appear locked. So i'm gonna try uninstalling to see what happens
Good! The CG appears later down the line in the first night between Edwin and Resnick. Go through it all and it should appear, more or less of it depending on choices, but it always appears!
Do you mean the sprites are locked in the Memorium? To unlock those, you have to see the character's memory in-game, which you can do by clicking their highlighted name when it appears in the story! If you've never unlocked them, they won't show up!