VPN advice

Hi was wondering if anyone could advise me on how to add these exceptions to my firewall as im having trouble using my VPN i signed up for, 

  • C:\Program Files\pia_manager\openVPN.exe
  • C:\Program Files\pia_manager\pia_manager.exe
  • C:\Program Files\pia_manager\tapinstall.exe
  • C:\Program Files\pia_manager\installer_win.exe
  • C:\Program Files\pia_manager\pia-openvpn.dll
  • C:\Program files\pia_manager\pia_tray_bin\nw-win\pia_nw.exe
  • C:\Windows\system32\DRIVERS\tap0901.sys