Hi,
VirtueMart Core is responsible generating the link of that "Continue" button (dynamically) by this file:
root/components/com_virtuemart/helpers/vmview.php with this line:
$this->continue_link = JRoute::_ ('index.php?option=com_virtuemart&view=category' . $categoryStr.$ItemidStr, FALSE);
So, it is impossible that the link has double slash.
My guess is, you have the wrong $live_site variable inside the
root/configuration.php file. Open the configuration file and find the
$live_site variable, make sure it is blank.
Alternatively, you can define a constant URL for that "continue link", open this PHP file:
root/templates/YOUR_TEMPLATE/html/com_virtuemart/cart/padded.php and find this line:
<a target="_parent" class="flexibleContinue flexibleButton" href="<?php echo $this->continue_link ?>"><?php echo JText::_('COM_VIRTUEMART_CONTINUE_SHOPPING') ?></a>
and change it to this:
<a target="_parent" class="flexibleContinue flexibleButton" href="URL_GOES_HERE"><?php echo JText::_('COM_VIRTUEMART_CONTINUE_SHOPPING') ?></a>
2- I need to see your website to see what is happening. Of course it is supposed to show 0 if the cart is empty. (FYI: make sure disable the"System - Page Cache" plugin. It uses "page caching" and causes that kind of unexpected results in VM websites, because VM requires dynamic rendering. That plugin is forcing Joomla Pages to be "static")
Regards