相手に伝わるビジネスメール「正しい」表現辞典 / 「言いたいこと」が、すぐに見つかる・きちんと伝わる

Faceboo auth is required to view user page.

If you have logged in since, it's automatically executed. If first time, Facebook auth login page will be shown, after your authorization, you can access user page.