How do you download sims 3 seasons for direct download on origin?

Is it not there or grey ? 

First thing to try is logging out and back in the client.

If it's not there, try redeeming the serial code you got in the Email (if you got one).

If it's still not there, contact Customer Support

They can be found here: https://help.ea.com/contact-us

See this post if you have trouble with the site: http://sims3.crinrict.com/en/2012/10/how-to-contact-ea.html