It is not a hard process to get your facebook app approved with publish_action. We just need to follow few simple rules and rest assure you will get a “Success” message after 4-5 working days of your submission.
Facebook check your app manually to approve it so, they ask to share login details (if required) to access your app along with the steps to use it. Facebook checks how app user login their facebook account, which permissions need to provide to share detail, is there any content posting automatically on facebook etc. So, we need to share complete flow of the app in simple steps
2. Screencast video:
it is compulsory to upload a video with your submission to display app flow. Record a video by using some screen capture software to display app steps clearly and upload with your submission.
you need to take care of Facebook branding when user share any content on facebook. Logo, Button, Icons should have facebook branding to clearly indicate to app users that uploaded content will be published on facebook.
If you will follow these simple steps while your submission. You will surely get success. Please write us in comments if you have any query.