I have the same problem. After a long hiatus from playing the games on Origin, when I went to play them again I was forced into getting the EA App in order to continue playing those games. So I got the app, tried to start some of the games, none of them worked. All of this was last year sometime, don't remember the exact date, however, after some hunk-a-junking around with some of the suggestions, I was able to play my games again. After a couple of months, I was again on hiatus from playing then tried again summer of last year. My Mass Effect 3 will not run, now it says the key is wrong (which I find odd as I played almost 3500 hours of this game) so I checked and it shows a different key in the EA App than what I had in Origin (although I was able to play this game after previous fixes for ea app but then not after my hiatus). When I try to insert the key that is on my "legal pamphlet" it wont let me, it tells me that I am offline, but clearly I am online and it shows me as online.
Does the key change when DLC's are added?
I have tried to play Anthem just now and it fails to start that game as well.
Also, report ID: 6e90c76f-474b-4c7c-b016-719b52e38e66
I want my Origin back, at least I could play the games I paid for.