Files have been downloaded and unzipped

But that’s all that happens. It does to a window showing me the contents of the zipped files extracted. Do I click on a file? I went into the Extension Manager and it isn’t reading any extension files in any of the folders. I referenced the troubleshooting page and I did go in and click on the Java version to use. I downloaded the lauguagetool test and nothing was underlined.

What am I supposed to do next? LibreOffice Version: 4.4.5.2; Windows 8.1; Java v. 8 update 60

Any help would be greatly appreciated!!!

Just download the *.oxt file from https://languagetool.org and install it with the extension manager. Do not unzip it.