If your page is not yet public on Facebook then you won't be able to connect your Surveybot. Here are the steps to set your Facebook page to public on Facebook.
1. Open your pages list in Facebook here - https://www.facebook.com/bookmarks/pages
2. Choose your page from the list.
3. Open the Settings for your page (top right)
4. From the General tab select "Page visibility".
5. Check "Page published" and then "Save Changes"
Your page is now public and will now connect to Surveybot.