Can't find "MyTicket Extra Details" in a new created Product

Hello,I am working on implementing the MyTicket Events Plugin and it worked pretty well so far, but now I have a problem. After implementing the JSON Code, I want to link it to a newly created product, but unfortunately the section "MyTicket Extra Details" is not shown, so I can't implement the details of this section, which leads to errors in the checkout.I would be very grateful if you could help me out.Thank you in advance and greetings from Germany.Tim