can't load thumbnails images

hi, I migrated entire site on a new host company recently, everything works smooth, except for the thumbnails images of products.
I can't resolve this issue even in hours of work... can you help me?
this is an example (products in category, the thumb of categories works)

www.erboristeriadellabasilica.com/integr...pparato-respiratorio

for now hikashop only displays categories thumbnails and the default barcode (wich I temporarily replaced with a customized one)
help me please... it's my mother's site

ok, now I'll try, thanks!
ps link here is working, I think this is an dns spread issue

EDIT:
media/com_hikashop/upload folder is full of images of products... so the problem i not here, and permissions are 755, so hika should have access to this directory..

mmmm.... so I performed a search in database, discovering for example this: product 964 (teapot sakura) is related with file 305 (photo of the teapot).
well: in file path column I can see the file name, and not the entire path. So I suppose the hikashop search the image always in the same directory (you suggest me it's /media/com_hikashop/upload, but the file here exist).
In backend -> hikashop -> global configuration -> file the path for upload is media/com_hikashop/upload/ so everything should be right... but it still doesn't load...
I'm demotivated...

in the editor in the backend the image of products still doesn't load, also if there's a line for it in the database...
in the frontend/product page I can see the image and it zooms in popup, but (for layout purposes) I made it hidden via css (display: none - simply)...
the strange is: categories thumbnails works without problems.
here are two screens: one for category page and one for product page (the image in product page came up via the article in product description)
thx!

EDIT: ps. I changed the default barcode with the shop logo ...and it loads!

exact: it works in product page but not in products listing page.
yes, I removed the image in product page via css, because like this I can compose every product layout in the article (in the screenshot, for example, there is a table with the candy on the left and the text on the right).
but in products listing the thumb doesn't load (and this problem happens only now that I'm on the new host company)..
and the incredible is that the categories listing works correctly, loading the relative thumbnails.

ok, I checked it in the database, because in the backend there's nothing about the image (and it doesn't save it if I re-upload an image)
the file name in database is: ec_caram.png
this name is written in the file_path column, the file_name column is empty.
file_id 379, file_ref_id 923 (the product id, this is exact)
I'm going crazy, thank you for now!!!!

yes I know, it doesn't work even ater saving.
ok, I'll send to you acces credentials in pvt - thx!

yes, debug is now on, and I get a message suddenly when I try to enter in the product editor:

JDatabaseMySQL::query: 1054 - Unknown column 'file_ordering' in 'order clause' SQL=SELECT * FROM sax_hikashop_file WHERE file_ref_id = 964 AND file_type='product' ORDER BY file_ordering, file_id


Call stack
# Function Location
1 JAdministrator->dispatch() /home/erborist/public_html/administrator/index.php:46
2 JComponentHelper::renderComponent() /home/erborist/public_html/administrator/includes/application.php:153
3 JComponentHelper::executeComponent() /home/erborist/public_html/libraries/joomla/application/component/helper.php:357
4 require_once() /home/erborist/public_html/libraries/joomla/application/component/helper.php:388
5 JController->execute() /home/erborist/public_html/administrator/components/com_hikashop/admin.hikashop.php:35
6 hikashopController->edit() /home/erborist/public_html/libraries/joomla/application/component/controller.php:754
7 hikashopController->display() /home/erborist/public_html/administrator/components/com_hikashop/helpers/helper.php:838
8 JController->display() /home/erborist/public_html/administrator/components/com_hikashop/helpers/helper.php:1032
9 ProductViewProduct->display() /home/erborist/public_html/libraries/joomla/application/component/controller.php:715
10 ProductViewProduct->form() /home/erborist/public_html/administrator/components/com_hikashop/views/product/view.html.php:23
11 JDatabase->loadObjectList() /home/erborist/public_html/administrator/components/com_hikashop/views/product/view.html.php:236
12 JDatabaseMySQL->query() /home/erborist/public_html/libraries/joomla/database/database.php:1071
13 JError::raiseError() /home/erborist/public_html/libraries/joomla/database/database/mysql.php:542
14 JError::raise() /home/erborist/public_html/libraries/joomla/error/error.php:251


EDIT: also I gave you superuser access now

I LOVE YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!