Thanks for posting and a warm welcome to the community.
Sorry to read that you are experiencing disconnections to the EA Servers.
From checking your connection, the downstream power levels are too high at + 14 dBmV and I would like to book an engineer appointment to adjust these further. I've sent you a PM (purple envelope icon, right corner) requesting some details.
This may or may not be the main cause of the issue, however they do need to be looked at. In the meantime, does this happen on all EA games that you have? Is this through FIFA 17 by any chance? Are you connected through wired or wireless on the Xbox One?