The Plugin Manager with Notepad++ is not pulling in the latest version of Bookmarks Dook. Instead you should monitor this GitHub for updated releases.
https://github.com/Dook1/Bookmarks-Dook/releases/latest
Download the appropriate ZIP folder based on your version of Notepad++ 32 vs 64.
- Open Notepad++ and navigate to Plugins>Open Plugins Folder
- In the window that opens create a Folder named BookmarksDook. It is important it is named this exactly as the name of DLL must match the folder.
- Paste the DLL file that was downloaded from the release into this folder
Follow this GitHub repository. If you click Watch then you can choose the appropriate drop down to follow.
Tutorial video from cricrazy - https://youtu.be/QZH-wxHtpwI?t=327