Send us an email at support@orgoninteractive.org and we can troubleshoot it! It might be a glitch. Can you include a screenshot of your inventory when you're at the final door? Or you can attach your save files, they should be found in C:\Users\ *[Your username here]* \AppData\Roaming\RenPy\OfficeLadies-4147420
I haven't been able to reproduce the problem on my own.
The version number still says 1.0 but it's been updated- although that shouldn't change your gameplay problem since it's in a section of the code I haven't touched.