I want to turn off Filter result preview

I’ve been using the AJax search pro plugin. I’ve added a filter checkbox. When I am selecting any checkbox from the filter list, it is showing a preview result.

I don’t want to see the result preview. What I want is when someone selects the filter, they need to put something on the search bar and press enter or search then the visitor will see results in the search page.

everything is working fine except the filter result preview is showing. I am unable to turn it off. How can I turn it off?