Today EA seems to have some issues with the servers, thousands of players complain that they can not log into Apex Legends.
For many, the error code 100 and Error 103 appears, the server problems seem to affect all platforms, PS4, PC and Xbox One.
So far, there is only the following message from EA:
We’re currently having connectivity issues with our games and http://help.ea.com. We want to receive more information.
Update (11:44) Message from EA: Our network teams are working on getting everything restored and are having to run through restarting some systems. We will post more updates on progress as soon as we have them.