Expert suggestions for Soft Rejected WP theme

Dear Fellows,
My recent submitted item in Wordpress Activism category has Soft Rejected due to design issues. There was not any specific change request form Reviewer, so I’m little confused where to change. Your expert suggestions are appreciated. Here is the live demo

Note: following is the cause from reviewer

Submitted design doesn’t meet our minimal design requirements. Once the threshold is met we will be able to provide you with more details.