Products are assigned to orders although they were not bought?

[cdaverlag]

Hello,

I have a pretty big problem with my Prestashop 1.4

When a customer places an order on my page, the ordering process works fine. The articles, which he placed in the cart, he must pay (and pay them well). Thats fine so far!

 

The only problem is that in the backend (and also for the customer in the frontend) the customer suddenly gets more items assigned to his order,as he has ever ordered.

If i click in the backend on "Orders" and then any customer's order, i can see the right price and the right product at the top ... However, below that in the "order_details" other products are listed that are incorrectly assigned to him!

 

Also, the customer himself sees under "his orders" the "Main Order" correctly but the "details" which expand at onclick are wrong with false products ...

 

What's going on? What is wrong? Thank you for your swift help

 

sorry for my bad english

regards cdaverlag