The post grid plugin does not allow you to show search and filter posts at the same time. It also does not allow you to have a show more button at the bottom when you want users to be able to filter posts. I found the interface to be unintutive and difficult to work with as well. I would like a refund and I will uninstall these from the few sites I was testing it on.
Welcome to our forum.
Thanks for your requesting refund, filterable style grid need to loaded all post on page load, that's why it doesn't require to show search input fields, user can access to all post via navigating filter button and pagination.
i will send you the refund.