Magento – Some of the products below do not have all the required options error on cart page when add configuareble product to cart

To add product with required custom option to cart you need your $params array to be like this

$params = array(
    'product' => $proid, // This would be $product->getId()
    'qty' => 1,
    'options' => array(
        'option_id' => 'option_value'
    )
);

Where

option_id - custom option id

option_value - selected custom option value

This will help you to get all product custom options data

foreach ($product->getOptions() as $option) {
    print_r($option);
    $values = $option->getValues();
    foreach ($values as $value) {
        print_r($value);
    }
}

I don't know exactly how you can solve this but I can explain the problem, maybe it helps.

I see that the product page is on https but when you click on the add to cart button the form is submitted to http://francesandalbert.com/checkout/cart/add/uenc/aHR0cDovL2ZyYW5jZXNhbmRhbGJlcnQuY29tL3JpbmcuaHRtbD9fX19TSUQ9VQ,,/product/172/. Notice the http.

Then that pages does a 301 redirect to https://{same url} and what you send by post (the ring size) is lost.

If I use firebug and change the form url to https I can add the product to the cart without any problems.

You can try to change the submit url of the form Mage_Catalog_Block_Product_Abstract::getSubmitUrl or you can set the unsecure base url of your website to https://... avoiding 301 redirects from htaccess.

These are just my suggestions. I have no idea if they will work.