I bought plugin on Joomla 3 Virtuemart, but it doesn't work correct. It always showing errors and dublicates. Just on the next day after I bought this plaging came out th update, but...I can't download it now...When I try to do it, only old version is downloading. How I can download this update?

I bought: Virtuemart Color Swatch 2.0
I need: Virtuemart Color Swatch 3.0