I'm afraid only users logged in to your account have access to that URL. However, if you click on "Preview" in the upper right-hand corner, the "Preview without display options" should generate a public link that Community members can view.
The "left" is what's causing it to appear on the left. If you switch that to "right: 13px", for example, it moves to the right.
However, there appear to be some other issues with the page. Have you considered migrating it over to HubSpot drag-and-drop templates?
HubSpot will often migrate a set number of pages for you and set you up with some LP templates. They're often basic but you can also find other templates on the Marketplace or get a web developer (there are plenty of us on the Community) to build or tweak one for you.