How can I install the Extended Language support for Acrobat DC Pro when using the 14 day free-trial period?

How can I install the Extended Language Pack? I installed the trial Adobe Acrobat DC free for 14 days. The customized installation had no option to install the Extended Language Pack. The forum says you can install it through the Windows Control Panel -Programs -Acrobat - add components. But according to the programs control panel  I've already installed all options and there is no option to install Extended Language Pack... It seems that the Acrobat_2015_Web_WWMUI.exe file that is used to install the trial version has not this option...