What's wrong with this vst?

I’ve tried nearly everything in order for this vst to SHOW UP on audacity…help???

its a vocal tweak. i’ve tried going to preferences and checking the box–UGH. it just wont workk.
and im positive i already installed it under aaudacity plugins. ive made a folder with it, didnt work, i took out the folder, didnt work.
the download link: http://www.brothersoft.com/voice-tweaker-download-86273.html

i’d greatly appreciate it if u know whats wrong with this vst…or me hehe hehe

See here: https://forum.audacityteam.org/t/1-3-8-and-later-gui-mode-vst-plug-in-support/9706/1
and here: http://wiki.audacityteam.org/index.php?title=VST_Plug-ins
If you are still unable to get it working, then perhaps it is just not compatible with Audacity.