The problem

I ran into several problems when setting up, which I'll describe in a separate issue as it could be a quirk of my installation. However the most frustrating thing was when the repo creation failed it would lose all my repo settings.

I had to reenter my details nine times due to errors, including my path, repo key, and --remote-path=borg1

Requested Solution

Repository settings should be saved, the Start Backup button should be grayed out until that the checks have completed.