1. Then you should ben able to download it already, I have no problems doing that.
2. Since you are nice to show images of the downloads, you can see that you have access to the INHEAT-FIRST NIGHTS-V2.zip that is the latest version.
3. The devlogs are NOT where the test builds are published and they can't. It's only a place for them to post news, info, or updates. Not to post downloads of the latest builds. You never download from the development logs, you download them from your library or the ones that says Download. The image you have shown of it saying Buy Now are from the devlog post, and you cant download from the devlog area. Alot of people misunderstand of the devlogs.
If you really have a issue then either contact support or try message them directly, instead of asking like you are trying to get it for free. I'm not trying to accuse you, you just sounded wrong in the first place, and since I have no problems downloading it, then you should also have no problems. So my only suggestion is go to support or ask them directly. Likely on their Twitter, or X as they call it now.