Help needed with an add-on

[qwikad.com]

One programmer wrote this add-on for me, but it has an issue. The programmer is currently busy with a lot of work, so I was wondering if someone can help me with it.

The add-on should allow people to post a set amount of free ads and once that limit is reached they are required to post featured (paid) ads.

This is what goes to the config file:

// Max amount of free ads user can post. If set at 0 it only allows featured listings. Default is 10

$free_ad_limit = 10;

// Enable the timer so that if a certain amount of time is passed, poster can post ads again.  Enabled: 1

$enable_max_ad_timer = 1;

// If $enable_max_ad_timer is enabled above, specify how much time poster has until their free ad limit expires.  Default: 86400 (24 hours)

$max_free_ad_expire = 86400;

And this is what goes to the post file:

 if ($enable_max_ad_timer == 1)
        {
 
   
            $ask_query = "SELECT ip FROM $t_ads
                                     WHERE ip = '$_SERVER[REMOTE_ADDR]'
                                    AND (UNIX_TIMESTAMP(createdon) > '1379843684'
                                     AND UNIX_TIMESTAMP(createdon) <= '".(time()+$max_free_ad_expire)."')";
 
            $ask_result = mysql_query($ask_query);
            $ask_count = mysql_num_rows($ask_result);
       
            if ($_POST['promote']['featured'] == 0 && $ask_count >= $free_ad_limit)
            {
                $err .= "&bull; $lang[ERROR_ASK_FEATURED]<br>";
            }
        }

What happens is it stops people from posting free ads just fine, but then when the $max_free_ad_expire expires it continues to stop free ads from being posted. It's supposed to let them be posted again after 24 hours (or whatever time frame I want to use).

Does anyone know what the issue might be?


Thanks!