My third plugin got rejected

My plugin got rejected and I can’t understand why because their feedback is very generic without any pointer to the actual problem. Kindly assist.

Review Feedback: “unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again”

The plugin name is: Better Insights for OpenCart 3x
Plugin demo: Administration
username: demo
password: 12345678