Just wondering if I have to buy access to the free trial, and then cancel if I do not want to continue. Thanks.
No, you shouldn't pay. Just get your copy for free and make experiments with it. If you don't like what happens - just remove it and that's it. No need to pay or cancel something.
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Should be you are using the "WPFTS :: Live Search" widget. This widget is intended to show this live search data. If you don't want them, simply use the native WP Search widget.
Hope it helps.
It's simple to do with this addon
It contains some code to limit post_type to 'attachment' only:
Pretty simple. If you want to set up your own post_types, just modify this code. You can read about full WP_Query() parameters at the Wordpress official documentation.