Either download the full version and copy&paste the entire content of the www/save folder from the previous game folder to the new game folder, OR go to the mega folder with the old update files and update to 24.06.03 before applying the patch file for version 24.07.05.
The official MEGA folder has a sub-folder with old update files:
So far it's Kurohime, Jessy, Mai, Dea, Shanna, Naomi, Jeanne, Varea, and in the time skip phases Palasha and Grey.
The birth act is one of the different phases in the "time skip" system, that'll progress the time after the current end of the main story. It's split into multiple phases, which all show content about certain things, and the birth act is all about the birth of your children. However, there is no content for that phase yet, as the time skip content is a work in progress.
Are perhaps missing the wedding with Varea? It's a requirement for the next step.
I recently posted a roadmap of what my priorities will be for a while. -> https://f95zone.to/threads/renryuu-ascension-v24-07-05-naughty-netherpunch.1196/post-14095968
Maybe the main story could've been done soon, if I would've delayed everything else for it, but that's not what happened. But as shown in the roadmap, the story will be much more in the focus now. I can't give an estimate how long that'll take though. It would probably just be wrong again anyway.
I think it's mostly a matter of taste, whether the game is great or not for you. There are many who play for over 100 hours, but not everyone has that much time for a long game. Also, since the game is a work in progress for a very long time, there are some old CG images with different styles in the game.
I think you mean Grey. She is on the right because her wedding is in the time skip preview content, not in the "normal" time.
Did you finish all previous steps of her events?
