While we can't share specifics, could you share a screenshot of your channel monetization page: https://goo.gl/ySjhEs ? We'll take a look. Thanks.
So long as you meet the eligibility and program thresholds, you can expect to hear back in a month or so. Note: all applications are still manually reviewed, so it does take a bit of time! If it's taking longer that likely means your channel is being held for a second review.