Just created a fresh account here to let you(and possibly other ppl)know that there is a fix that many ppl forget to mention
Which is called C&C Ultimate Collection Launchers it can be found on bibber.eu, after you got the installer just launch it->select the game you want to install it
After that the "Advanced launch options" should work inside the ea app
I am unsure if its allowed to link that site here(or any links for that matter) so ill just keep it like that
Hope it helps^^