I'm using mobile and the adding website flow is smooth and concise. I connected my blog hosted on GitHub. The only caveat is that this requires permission to access everything on your GitHub account, public and private repositories, and permission to do anything with them.

However, after adding the website repository, I'm not able to see any posts, is this only for pages? There are some UI issues with page editor on mobile that can be sorted out in beta. Nice product!

Update: I can access posts after changing the URL, but a direct link is missing in the UI.