Sorry, but your BF has serious issues - do not give anyone access to your accounts (especially for those stupid resons).

Where did you download it is the more important question. Also just try the Windows setting instead installing some 10 year old executable from somewhere in the web https://support.microsoft.com/en-us/topic/using-the-shortcut-key-to-enable-filterkeys-d9202e14-4ce5-84ed-582b-68ea1538fa59