ou need to make sure EA is not down for everyone before you take further action. The FIFA 17 servers may be down instead of it being a problem with your connection.
If it isn’t an EA problem you should try restarting your console and your router. You may also want to check your modem.
Look in console settings to see what NAT type you have and if it is not Open you should look at support for your console on how to fix NAT problems.