If you are encountering errors in version 2.6.0, they are usually environment-related rather than licensing-related. Here is how to fix them:

Searching for a usually ends in a broken installation or a compromised computer. If you are serious about video editing, the stability, regular model updates (like Proteus and Iris), and cloud rendering capabilities of the official version far outweigh the "savings" of a pirated copy.

Most "crack" installers are bundled with malicious code. Since you have to disable your antivirus to install them, your system becomes an open door for data theft.