Help.. My game disappeared from Origin.

I bought The Sims 4 from Origin about a year and a half ago, and until recently it's been running fine on my computer. About a week ago I suddenly couldn't launch my game anymore. I tried restarting my computer, and it did nothing. I tried repairing my game in Origin, but the program got stuck on "finalizing" until I completely closed and restarted Origin. When I opened it up again the repair would be finished, but I still couldn't launch my game. I then completely removed all my CC and mods, tried to repair my game, restarted my computer again and it still did absolutely nothing. I then grew tired, so I just left it for a few days.

Today I came back to it, tried to repair my game and got error code "327682:0". I did some googling, and eventually came to the conclution that I had to uninstall my game, clear the cache from the Origin folders, uninstall Origin and then reinstall everything again.

So I tried doing that. Origin is running fine on my computer again, but my game is completely gone. I can not find it in my game library, and when I search "The Sims 4" in Origin there's no option for me to reinstall it without buying it. I've kept the confirmation e-mails that I got sent after buying the game, if that's any help at all. I can't seem to figure out if there's anything in them that I can use to get my game back, though.

I have no idea what to do... I had a bunch of packs as well. I've spent a lot of money on this game, there's absolutely no way I'll buy the game and all the packs again. Any ideas?