Hi Clipsos-Norwang,
I'm not from EA but one thing to check is once the app has loaded, if you press L-Alt (or go to the hamburger menu top left), go to Settings -> Application -> "Open the EA app automatically on startup" (or similar setting) and make sure its toggled on.
If that fails, in the menu you can try go to Help -> App Recovery and see if it can repair itself - though if a fresh reinstall didn't fix it, then I would imagine this won't get you too far either.
Not sure if either of those will work but something to try!
In answer to question 1, the background service was a design choice by EA which operates as a central orchestration between all the EA compontents (such as game licence validation or elevated launch) , launching them at the right times and handling communication between them. If it fails or isn't running then nothing runs. However, it should be running by default normally and, even if it's set to not run on startup, when the EA App is launched it should trigger the service to start itself in the background.
The last thing I can think of is to try and cause the error and then to check the log files which I believe should be here: C:\ProgramData\EA Desktop\Logs\
Mainly, the following ones:
Just in case there are any records of the service starting but then failing and exiting. If you are lucky, it might give you a hint at what is causing it to fail if that is indeed happening.
Good luck!
