Have you gone through the approval process? The accepted use cases are very restrictive, and specifically do not support allowing you to access more than 20 of

Have you gone through the approval process? The accepted use cases are very restrictive, and specifically do not support allowing you to access more than 20 of your own posts. "I want to display hashtag content and public content on my website." "This use case is not supported. We do not approve the public_content permission for one-off projects such as displaying hashtag based content on your website. As alternative solution, you can show your own Instagram content, or find a company that offers this type of service (content discover, moderation, and display)."