If entering your license code in the web interface has not worked, you can apply the code by adding this to the end of your config/advanced/config.settings.php file in the directory where you installed Deskpro:

$SETTINGS['core.license'] = <<<LIC

AnUAfEddXWwELRgBQWV2OFgLfHYAegEXXyAjCkAfHCQZFn8hXQ

Vz5WcDUTKh8XUwsALScONTghOB9wNQ47VQ41EEBCHlN9VSsZHx

UdJF0oVTNTY3ZUZGM0CAYgOzchKAJXIS55GncIATprLhMZGT8z

cuDFwrC3AvAwAZEkp5VQsDJkAvDixERlp9W3I+BBFfOT4PClh6

V0FORS00NjEyLUlOSUFFWk9LQ1BQQUlOSTIxNjRFTkFXWAJXKg

gsJA8AMzQvAyEuNBhJPgZARR8RMXcrPi0bYlkoXixAL1MrHxBY

LIC;

 Replace the lines between <<<LIC and LIC; with your license code. The above is a random example.