Try reloading it at the original URL (removing any “/#/…” added by Angular). It needs OAuth to GitHub (just access to public information on your behalf), since anonymous calls are rate limited. If you still can’t get it to work, let me know what error(s) you’re seeing in Chrome’s console.
While github’s list is good for day-to-day use, the Angular app adds a few bits, like average lifespan of pull requests shown and highlights pull requests with unanswered comments (i.e., last comment by person who submitted the pull request), which may be helpful in curating.