Why cant you sell your items on farmville?

I am having the same problem. When I downloaded Kaspersky, I was no longer able to open the gift box or buy from the market to plant. Kaspersky shows Farmville as a gambling site and I think that is where the problem is. I have not as yet been able to fix the problem in my anti virus software.

Go to setting on the top of Kaspersky and turn off anti banner then farmville will work right again. I just fixed mine