Hi, thanks for the quick reply. The script that we install in our servers because I have problem with my keyword rank, it says N/A to all of my keywords. Thanks again.
The script you install on your end hasn't been updated anytime recently (maybe 6 months or so). There have been reports of Google throttling users who are making a bunch of API requests in a short period of time though. If you check this thread, there are some people who are having good results by artificially slowing their API requests down with the sleep() function.