Sorry brother...
Here you go.
1. once you have logged into vimeo you will arrive at a page that says "Welcome Home"
below that you will see a Menu bar that says: My Feed, My Videos, Watch Later, VOD, Discover, Activity,
2. Click on VOD (video on demand) below the menu bar the page will change It will display your purchased videos.
3. Click on the title of the video you wish to download. It will be below the video. This will take you to a black page with the video at the top.
4. Scroll down below the video. To the right under the video you will see a button that says Download Now. Click it... This will begin your download. You may be asked to approve the download with a pop up on your computer depending on your security settings. if so approve the download.
The video will be downloaded to either your download folder or where ever you have told your web browser to download files.