Unexpected change the language of the program in Windows 10

Hello,

I want to ask for help. I have Windows 10 and try to install Norton Internet Security from the manage.norton.com. I want to install the program in Polish, so choose the language from the download menu. NortonNISDownloader in the Polish language, but after downloading the installer starts, he is already in English. After completing the installation of Norton is in English. I've tried to reinstall Norton Internet Security, but does not solve the problem. Please help