If you are asking whether Video Saver 8 will work on a Mac, the answer is No, sorry.
Theoretically, it might work if you have an intel-based Mac (so not one with the M1 chip), are prepared to install Bootcamp and a full version of Windows.
If your first post to this thread is asking for help getting the product activated, the first thing to check is whether your Antivirus and/or Firewall is preventing your computer from contacting the Magix server, or from receiving any reply from the server.