Can't adjust track volume

I have been using cubase 5 for a bit now without any issues but recently bought a tascam us-1800. I am using Windows 8.1 as there aren’t any drivers for 10 yet. I am able to record tracks no problem but I can’t adjust the volume on any tracks. The toggle for it doesn’t even show up. I can only adjust the master volume. as far as I know everything is configured properly in VST connections and device set-up. any one have any ideas?