Today I canceled a contract that was supposed to automatically renew at the December 19.
In this case, is it sure that I will be able to use the program without any problems until December 19, but the money will not be automatically withdrawn in the next month?
As this is a user to user forum, we users cannot be sure about what MAGIX does. We can only assume that they act according to the "Purchasing Details" included in their online web shop. Did you get any confirmation email regarding your cancellation from MAGIX? If not, try contacting infoservice@magix.net again. You might also check if there is anything on your MAGIX Account > My contracts.