Sims 3 Expansions Not Downloading

I can't download expansions and stuff packs for the Sims 3. I was able to the first week in October when I was still within a window to return a computer I had purchased-specifically to play the Sims 3. At the time, I only loaded the base game and several expansions and stuff packs. Everything seemed to work well and so I was pleased  my new computer and decided I would keep it.

Now, two weeks later, I discover I can't download and install my remaining stuff because the EA App does not work. I've been trying for the last two days, uninstalling , reinstalling, clearing cache-etc. really frustrating. Also, returning to Origin does nothing for getting the expansions and stuff packs because they are no longer present when I click on the Sims 3 icon , that is these things are no longer listed in the drop down box, at least for me. By  the way, I have a Dell XPS 17 9710 laptop with a 4k screen which I scale lower at full screen so I can read the menu script in game. Even so, with a lower screen resolution (at  a 16:10 ratio) the game looks beautiful and so "new" to me.  I'm mentioning the laptop in case someone is thinking about a new computer while we are all here discussing the fact we can't even get our content to load. EA pleeeze.....it's getting cold here, smacking me with free Sims 4, when all I want to do is play my Sims 3 games

before ever, ever, thinking about investing in the sims 4.