Just to confirm, was your channel monetized earlier and now demonetized, or is it the first time you've applied and were rejected? Also, please share a screenshot of the reason you’re seeing on this page: https://goo.gl/297Xrv . Keep us posted.
Thanks for the screenshot. If your channel is out of compliance due to reused content, this typically means that the content is not original/auto-generated. Here's more about reused content & how you can avoid them in future videos: https://goo.gl/Vnir3S