Fixed issue with payments and released version 1.7.4. Please update your scripts ASAP.
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Also remember making paid not processed ads. First find not processed ads checking your email (or logging in to your paypal account) for messages saying payment received. Find ad title and id in payment description. Then log in to your site admin, navigate to “Manage” -> “Ads” and search for ad using search form at the top. Then select found ad by checking checkbox on the right of ad, and use “mark as paid” if it is payment for posting, “make featured” if it is payment for making featured, action under the table in dropdown select box.