Vendor field in product creation

Hello,
I have a site under construction with Hikamarket.
I used this site to create a second site (copy / paste).

On the second site, when I create a product, I can choose to which seller I assign it, via a field in the product creation details.

However, on the first site, I don't see this field. Instead, I have a quantity field. I don't understand why. I had to change something but I can't find what.

Hello,

Regarding the screenshot, it looks like HikaMarket is not installed on the website (or the hikashop "market" plugin is not published).

Regards,

Hi,
Here is a screenshot, do you talk about this plugin ?
If yes, it is published. Hikamarket is installed and configured.
I can go the admin or frontend menus without problems.

Hello,

If you have the rest of HIkaMarket working, thus I can only suspect the fields which is displayed "instead".
Since it's via a trigger with an array, if another plugin empty the array to put its content instead, it can generate unwanted side effects like that one.

Regards,