when i click on your link you kindly gave this is what i get? Not the forms we are discussing, i am sorry but am i missing something else? Please see screenshot
You also might still be required to have health insurance cover for approx 2.5 million bht. But please do check as so much has changed since i converted my OA to a non o retirement (which does not require insurance, but you do have to have your eight hundred thou in a Thai bank account.