Modify "The Grid" WordPress Plugin's filter functionality

I'm using this plugin called "The Grid" to display my posts, which I want to continue using, but the filter doesn't work quite as I'd want it to. The problem is that the filter only filters among the posts that are already shown on the page you're at, instead of searching through the entire database to find all the posts that match the conditions, and reload the grid accordingly. So what happens is that if I choose, for example, to filter all posts with the "vehicles" tag, it will hide all posts on that page that don't have that tag. If there happen to be none, the page will appear empty, even though there are posts in my website with that tag. What I want is to modify this plugin so that the filter searches through the entire database and reloads the grid with those conditions every time the filter is used.