We'd like to help. Mind sharing a screenshot of the monetization page from Creator Studio: https://goo.gl/ySjhEs ? Also, can you let us know if you were a part of the YouTube Partner Program? Keep us posted.
The best place to check is your Monetization page in Creator Studio: https://goo.gl/XcWpoJ . From there, you’ll see an explanation with links to relevant resources. You’ll also see the option to reapply from that page accordingly!