: Close and reopen Total Commander. The "1-2-3" nag screen will disappear, and your registration name will appear in the title bar. Modern "Paste to Register" Method

: The key may be packed inside a zero-compression zip file named tcmdkey.zip .

No. Total Commander for Android is a completely separate app with its own license (though it is very cheap, often $3–$4). The Windows key does not work on Android.