obm81

Hi @niklasinpsyde,

thanks for your reply and idea about the problem.
Actually I didn’t use any other plugin but put some function to my child-themes function.php, where I check the current cart about any products added there, and if there is given a special product ID, I add a clone of the same product according to the given amount. The clone itself has a new product ID and it’s price is set to 0.00 at the backend (maybe that’s the problem? but than why did it work in the beginning?).

I also adjust the amount according to the count of products in the cart. Everything works fine (and all together worked fine for Tuesday till Wednesday), the whole calculation, adjusting amounts, etc.
Just once you hit the “kostenpflichtig bestellen” in your cart, the redirection doesn’t go to PayPal, but to the cart overview page again (I think that’s set up at the backend as well…), showing me the error message mentioned above.
In the network, I also can’t see any mistake or error, nor can I see any XHR calls or something like that 🙁

Greetings
Oli