If you bought from Magix, read carefully https://www.magix.com/int/terms-and-conditions/ :

§ 3 End user cancellation policy regarding distance sales contracts (which includes the link to Cancellation policy and form as PDF).

Quote: "Email: shop@magix.net and provide explicit notification (e.g. a letter sent by mail, fax or email) of your decision to withdraw from the contract. You may use the attached cancellation form for this if you so choose."

Note that this is a community forum, which cannot give refunds.