If you want a safe, fully functional version of the software, you should obtain a legitimate key. Here is the standard process:

Log in to the official muvee website to view your purchase history.

Contact muvee support directly. If you provide proof of purchase of an old CD, they may issue a replacement key. Note that support for legacy desktop products is very limited now.

Cracked versions of Muvee Reveal X are often modified to bypass the server check. These modifications can make the software unstable. You might find that the program crashes frequently, fails to render video correctly, or loses your project data right before you finish. Furthermore, cracked software cannot receive official updates or patches, leaving you with bugs that were fixed in later releases.