After you have gotten up to ten points, you are ready to get free ogplanet astros for Lost Saga. To get your astros, go up to the section on the site that says "prizes" and click on it. Among the categories, you should see "Ogplanet Astros." Click on it. Beneath the picture of the $10 astro code is the phrase, "Click here to claim this prize." Click on that.
Now on the on the right side of the webpage, under quick stats, it should note that you have one pending prize. At this point you must wait between one to two days for the prize request to process. When processing is complete, you must go to your prize claims and click on the name of your prize. A pop-up should appear. Copy down the code that is displayed in the pop-up.
At this point, you can head on over to ogplanet's site. After logging in and going to the astro purchasing page, you want to select coupon number as your payment method. From here, you just put in the code that you got earlier, and your ogplanet account will be credited 200 astros immediately.
Congratulations you did it!