[SOLVED]Product disappeared

-- url of the page with the problem -- : www.ilmondodiwit.com
-- HikaShop version -- : 3.2.1
-- Joomla version -- : 3.8.2
-- PHP version -- : 7

Hallo all.

I have some products disappeared in the backend productpage and i cannot edit them.
i don't know why and how but they don't appear anymore in the backend under component>hikashop>product
you can find them in google search the id's of the products are 7921, 7819, 9058 and also the category 83 is disappeared.

For sure i messed something up. i don't know what?

Can somebody help me to debug?
i attach screenshot of backend where i searche with product id which normally finds the product

This is the result of searching some product


This is when i search the above id's

already solved.

i applied a mass action searching for the string in the productname. I created a new category where to put the missing items in and then i added them with massa ction to the new categorys. hope that helps someone.