Hi,
The vendor description data is cleaned by HikaShop using the Joomla Filtering Input system.
I guess that the iframe data is removed by the JFilterInput::clean function.
Can you please edit the file "administrator/components/com_hikamarket/classes/vendor.php" and replace
$safeHtmlFilter = JFilterInput::getInstance(null, null, 1, 1);
$vendor->vendor_description = $safeHtmlFilter->clean($vendor->vendor_description, 'string');
$vendor->vendor_terms = $safeHtmlFilter->clean($vendor->vendor_terms, 'string');
By:
$app = JFactory::getApplication();
if(!$app->isAdmin()) {
$safeHtmlFilter = JFilterInput::getInstance(null, null, 1, 1);
$vendor->vendor_description = $safeHtmlFilter->clean($vendor->vendor_description, 'string');
$vendor->vendor_terms = $safeHtmlFilter->clean($vendor->vendor_terms, 'string');
}
So it will activate the filtering only in the front-end.
If it is right for you, I will see to put an option in HikaMarket to let you allow special HTML content in vendor description and terms.
But for security reasons, it is better to not let your vendor put some special HTML content which can create some security issues (like inserting some javascript).
Regards,