E-mail if you have questions about your customer account, registration of software or sales: infoservice@magix.net
Ticket system if you want technical support. Click on the SUPPORT link at top of this page and then select your product. On the next page scroll down until you can click on Contact Support and create your ticket.
Unfortunately, your first post is very much lacking in information and is also really nothing directly to do with the OP's question, sorry. Therefore, it has been hidden.
Please create a new post in the appropriate forum area, making sure to tell us exactly which Magix app you have and what, if any, error message you receive.