Product in catalog facebook deleted ! Help

Suddenly my product catalog on facebook has had no products for 3 days. I did not see him. We have added 43 new products to our site today and they are connected with the pixel plugin but the other 100 products on our site are as non-existent in the catalog. It is not displayed! Why ? I stop my ads on facebook because no more products in my catalogs! I need help, it’s urgent !!!!