Does a folder in my user site conflict with a project site?
I just did the experiment of naming a new repo with the same name as a subfolder in my user site repo:
As a result the new repo took precedence over my personal site.
Github support response:
Yes, they would conflict. The url for Project sites will be username.github.io/project, and the url for a folder in a user or organization site would be username.github.io/project.
I would recommend that you either rename the directory or the repository name.