Hi,
Please edit the file "administrator/components/com_hikashop/helpers/helper.php" and replace
$result = (hikashop_isSSL() ? 'https://' : 'http://').$_SERVER["HTTP_HOST"].$requestUri;
By
if(strpos($requestUri, 'http://') === false && strpos($requestUri, 'https://') === false)
$result = (hikashop_isSSL() ? 'https://' : 'http://').$_SERVER["HTTP_HOST"].$requestUri;
else
$result = $requestUri;
It will avoid the issue of duplicate "http".
It looks like some web-servers include the domain in the "REQUEST_URI" and in the "REDIRECT_URL" while they shouldn't.
We will also include that patch in next HikaShop release.
Regards,