We would like to know more. Go here: https://www.youtube.com/features > Click on monetization and share the screenshot of the page that you see. This would help us look into the issue better.
Thanks for sharing the screenshot. We see your channel is in review. YPP applications are reviewed manually & it does take time. If it’s taking longer, it could likely mean your channel is being held for a second review. Hope you hear back soon.