function sleep(ms)
{
  return new Promise(resolve => setTimeout(resolve, ms));
}

function removeElementsByClass(className)
{
  var elements = document.getElementsByClassName(className);

  while(elements.length > 0)
  {
    elements[0].parentNode.removeChild(elements[0]);
  }
}

async function coupon()
{
  await sleep(5000);
  removeElementsByClass('hidden');
  var coupons = document.getElementsByClassName("vpc_clip_section");
  console.log(coupons);
  for (var i = 0; i < coupons.length; i++)
  {
    var c = coupons[i];
    console.log(c.innerText);
    if(c.innerText.substring(0,1) == 'S')
    {
      await sleep(2000);
      c.childNodes[1].click();
    }
  }
}

coupon();