I just deleted my saves and did a fresh run with no issues unlocking everything. That is, deleted my saves in the game folder and C: Users/your name/app data/roaming/renpy/sexbot.
All right. Let's keep our cool heads and dig deeper. Which version of the game do you have? The pirated 0.5 beta posted on the front page, the pirated 0.5 official that was released a few pages back (because those might be glitchy and this might indeed be a glitch, who can tell?) or the official Patreon release on the dev's Patreon page?
Seems like you made the right decisions with the family. Maybe back up a little and answer Bailey's call and tell Alexa "maybe a little" and see if that unlocks it.
It hasn't happened to me, but I've heard rumors that skipping through entire scenes either with Ctrl or right clicking to the next decision will block unlocking some scenes. You say it's a fresh download and install, so I assume it's a new game which the dev has recommended, so you're good there.
If all else fails, this is definitely a glitch, but something the dev hasn't been able to repeat nor myself and we'll chalk it up to the version pirated.