I just came around to the HA Proxy & Ubuntu 20 Site and noticed that the Link to the Digital Ocean Guide is not working, it just gets to a 404 Page. It seems there is simple mistake on the end of the link preventing it from opening.
The current Link is
As mentioned above its on the Ubuntu 20 Page, I would guess its the same process as on 14? But i didnt read through the article just saw that the link is broken.