I can't open the sims 4

Hello, 

During the last update, the ea app had to restart and to download an update too. It crashed to 0% for an hour, so I took the decision to restart my pc because I couldn't do anything. It began where I had left it and finished the update. 

When I tried to open the game, I had a message that said to uninstall and reinstall the game. 

That I did (it took the night). 

But it tells me now that : "the application failed to read the game license file. We advise you to restart the game in online mode. If the problem persists, clear your cache."

I did everything, but the message still appears. I don't know what to do now ! 

(I have a Windows 8)