my game does not open

When I try to open The Sims 4, I get the message "It failed to start due to an error on our end." I've tried the following steps, but the problem persists: 1. I completely uninstalled and reinstalled the EA App and The Sims 4. 2. I backed up the Documents folder and cleaned the localthumbcache.package file. 3. I ran it as administrator and uninstalled mods. 4. I checked for EA App updates and performed a repair. 5. I temporarily disabled my antivirus and firewall. The game still won't open. Please check if the issue is related to licensing or authentication.