I have been made aware of the issue with the tincture not showing up, and am correcting this now.
Okay, I figured out the issue, I screwed up with the files, this is now fixed, the paid version is now the current update, and the free version is now the last update.I also took the time to make sure I do not make that mistake again
How do I use it? I see it in my key items, but it's not usable
You don't have to, once you have it the scene is possible. Just click the "more" option and you will see it.
What? The more option where?
When interacting with Rubia (the redhead in the greenhouse).
Getting the tincture adds the sex option, and she becomes pregnant after you exit the interaction completely. Then you also get the birth option.