If you purchased a key-based license and cannot find it, check the following locations:
The Premium version removes ads and unlocks several advanced tools: Google Play File Commander Manager & Vault – Apps on Google Play activation key for file commander top
File Commander by MobiSystems (the popular "File Commander - File Manager & Free Cloud" app), the "activation key" or Premium license is typically handled through an in-app purchase on the Google Play Store rather than a manual alphanumeric key. Quick Activation Steps In-App Purchase If you purchased a key-based license and cannot