Hikashop Social Plugin - 404 when opening the link from Facebook

-- url of the page with the problem -- : rolex.jewelrygoldfinger.com/watches/land-dweller/m127336-0001
-- HikaShop version -- : 6.3.0
-- Joomla version -- : 5.4.3
-- PHP version -- : 8.2

Hi,

I have 2 multi-lingual websites where I have a 404 page when sharing a link on Facebook. The display on Facebook is ok but when I click on the link I have a 404.

I presume it comes from the custom code I have for this plugin which may not be valid anymore as the error doesn't happen in my other websites.
The custom code is this one: www.hikashop.com/forum/product-category-...tilingual-sites.html

Could you help me?

Thanks in advance

Sandra

Additional note.

It works fine on 3 websites + 1 multi-lingual site (not a Rolex one).
It doesn't on 3 other websites (one is in only one language so it's not the custom code).
All my Rolex sites are set up in the same way, so I confess I don't understand what could be the issue, I'm lost

Sandra