You'll have to pay for a Pro version if it's more than 6 months since you bought Pro...but basic's free. You could try a basic version. Do you have your Pro installer saved? Just that when you install a new version, it automatically removes the old version. So if you don't have the Pro installer saved, you'd lose the Pro version you have.

Don't know about the updates thingie...I've got mine set to tell me when a new major release is out but it never has either. I guess that feature isn't too reliable