Is the plugin is compatible with WPML ?
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It does!!! It works.
Thanks for your hard work!!!
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.
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.