Nevermind, I figured the gallery out; you have to finish with a client before unlocking it.
Still, I can't zoom in a second time during gameplay (after buying the second camera upgrade), is this intended?
Hey, I don't exactly understand what doesn't work for you. If you maxed out the camera upgrade, during the main cafe gameplay you should get on the bottom screen 'Cam' button which you can scroll up on the screen if clicked and then zoom on it clicking the + sign on the view.
If there is still something that looks like a bug, please come over to discord and send me a screenshot, I will check it out and try to either fix it or explain.
Sorry for any issue.