@GeoToxxin The error message hasn't been updated to reflect that the EA App is the only option in Windows. It's not relevant here.
With these other issues addressed, a clean uninstall and reinstall of both Sims 4 and the EA App might help; at least, it helps almost everyone with this error. Start with Sims 4:
- Put aside your Sims 4 folder in Documents\Electronic Arts and rename it to something that doesn't include the words "Sims 4."
- Download Revo Uninstaller (the free version is fine) from here.
- Launch Revo, select Sims 4 from the list, and click Uninstall.
- Once the game is uninstalled, select "Moderate" under "scanning modes," and click Scan.
- Review the list, in case there's something you want to save; otherwise, click Select All, and then Delete.
- Close Revo, and restart your computer.
Uninstall the EA App with Revo as well. I don't have instructions for that at the moment, but the process should be straightforward. Restart again when you're done.
Install the EA App, then create another new folder into which you'll install Sims 4, i.e. not the already-existing D:\EA Play. The folder should be on the root level of the drive of your choice, so for example D:\EA Games would be fine.