@NastyaVicodin
1. Are you sure you are on the same account what you create when registering the game?
Run Origin as Administrator. ( Right click-Origin icon "run as Administrator")
Go to the Origin/library and check if your game is there and check it has the mark "installed".
If it is there - right-click on TS4 - option "repair game"
2. Uninstall Origin using Revo program - free version it will be clean your computer of all traces of Origin
https://www.revouninstaller.com/revo-uninstaller-free-download/
and download again
http://origin.com/download
3. If it still will not work probably your antivirus program or Windows Defender is blocking it.
In this case, you can add the game to exception
https://crinrict.com/blog/2019/03/windows-10-defender-controlled-folder-access.html
4. Try to launch the game in windowed mode
https://help.ea.com/en-us/help/the-sims/the-sims-4/playing-the-sims-4-in-windowed-mode/
5. There is also a possibility that some of your programs running in the background are blocking it.
If you have it - disable the Rivatuner overlay. If you have Nahimic program - uninstall it.
I don't work for EA
@NastyaVicodin
I have edited my post one minute ago.
Point 2. about reinstalling Origin.
Also, check how much space you have on the C Drive. There, a second game folder should be created when it is enabled. If there is not enough space, the game will not start.
If you have programs like Peer-to-Peer (P2P), such as uTorrent or Limewire, close them.
All programs that try to apply a filter, an additional image or an additional graphics interface to the window of a running program can cause problems with the Origin application and games. Origin has its own overlay available in games, so running additional programs of this type can be a source of trouble.
These types of overlays can be added by voice communication software (VoIP) such as Ventrilo or Mumble, as well as game progress monitors such as Raptr. Close such programs or disable their screen overlay before running the Origin application or game
One more information. Origin does not work with proxy servers
@NastyaVicodin If you have followed Kreatoras' suggestions thoroughly, and are still struggling to connect.. you could also try the EA Online 'live' Customer Support, as they can step you through technical issues also.
Hope this helps.
