Mass Effect 3 N7 Digital Deluxe Edition Not Connecting to Server

@RegulusN7 I would install everything to the same drive. This can cause a lot of issues with these older titles. 

One of the main issues here is the error you get. It says you need to log in with the account that owns the content which typically means you either don't own it, or the EA app is trying to access content it doesn't recognize because it isn't in the default location.