Multiple problems with shopping cart module

-- url of the page with the problem -- : udesignphototours.com/information/test-only.html
-- HikaShop version -- : 3.1.1
-- Joomla version -- : 3.7.2
-- PHP version -- : 5.6
-- Browser(s) name and version -- : Firefox 53.0.3
-- Error-message(debug-mod must be tuned on) -- : Notice: Undefined property: stdClass::$cart_id in /mnt/data/vhosts/casite-631487.cloudaccess.net/httpdocs/templates/newlifestyle/html/com_hikashop/product/cart.php on line 221

Notice: Undefined property: stdClass::$cart_id in /mnt/data/vhosts/casite-631487.cloudaccess.net/httpdocs/templates/newlifestyle/html/com_hikashop/product/cart.php on line 221

Hi, I am just setting up Hikashop on a client's website and have encountered the PHP error as copied
Notice: Undefined property: stdClass::$cart_id in /mnt/data/vhosts/casite-631487.cloudaccess.net/httpdocs/templates/newlifestyle/html/com_hikashop/product/cart.php on line 221

Notice: Undefined property: stdClass::$cart_id in /mnt/data/vhosts/casite-631487.cloudaccess.net/httpdocs/templates/newlifestyle/html/com_hikashop/product/cart.php on line 221

I am also finding that-
- even if the price is entered as 1,000.00 in the product setup, in the checkout is showing 10.00
- one product does not show a price in the checkout at all even though 1,000.00 is entered as the product price
- when adding products to the checkout, they don't update immediately in the shopping cart.

The whole installation seems very 'buggy'. Can you please help to try and solve these issues?
Thanks, JR

Hello,

I just have a look on your website, and there a lots to say, let's make step by step :

- Notice error, isn't enough to create "real" issue situation (most often it's quite impossible to don't have notice error for a complex component like HikaShop), you see this only because your set up Joomla debug mode level too high.
- You have some display issue that leads difficult understanding of your website, to correct this and continue your work more easily I advice you to switch your fontend template for ProtoStar(or any default template), that can even maybe solve some "refresh" feature, like you speak about the add to cart refresh process.
- For your display price issue, check the way you configured your currencies, and more especially how you manage the Format in Locale information part.

Let's see results with these little advices, awaiting news from you.

Regards