EA ended the free giveaway of Sims 2 UC in October 2018 at which time they also announced that the game would no longer receive patch support and would be removed for sale from Origin. This was announced on AHQ, not sure if it was posted here. I think if you had registered any or all of your Sims 2 games through Origin, you got Sims 2 UC automatically when the free giveaway started in 2014 (I'm not sure as I had to ask for a copy to be added to my Origin account when I found out about the free giveaway). The only way to currently get copies of the game for Windows OS is to purchase physical copies of the game on CD/DVD from Amazon, E-Bay, your local game store that sells used games or your local thrift store. You will also need a disk drive which can be purchased if your computer does not have one. The only digital copy available is for purchase is for the Mac OS from the Apple App Store and only includes everything from Base Game to Bon Voyage.
I think Sims 2 UC was specifically added in 2014 to include everything and the individual EPs/SPs were removed around this time as well, but not sure. The individual EPs/SPs haven't been available for a long time.
