Many are:
You may see "File Commander Premium APK + Key" on hacker sites. Here’s why you should avoid them: file commander premium activation key install
Recent versions of File Commander have hidden the manual activation field to push in-app purchases. Many are: You may see "File Commander Premium
You can find a working key on Reddit or YouTube. Truth: Most posted keys are expired, revoked, or simply fake. Some contain malware. file commander premium activation key install
Ensure you are logged into the used for the original transaction. Navigate to the app's settings or "Upgrade" section.