Did you 'Restart' (not Shutdown) your computer between ununstalling and reinstalling?
Sometimes a Restart (not Shutdown) is needed. (So it's good practice to do one anyway).
Other than that you will need to give a few more details to give someone a chance of helping:
It will help to know if the drive had crashed, or if the files you are trying to recover were just deleted in error.
Can you say more about the 2TB drive?
Is it a HDD, an SSD, a Flash drive/Thunb drive, other?
Is there anything unusual about it or how it's formatted, how is it connected to the computer?
How long has Recuva been running before it quits?
Does it quit while scanning or while trying to recover?
Someone may also want to know just how you are using Recuva, are you using Deep Scan, what settings you have used, etc.