Already chatted with EA.
Servers are in maintenance mode for several hours.
I understand the inconvenience you have experienced. I really wish to resolve your issue now, but currently This is a temporary issue and our engineers are already aware of this. They are working to resolve this as soon as possible probably with in next few hours.I understand your frustration over this issue from your end and your time is valuable for us. unfortunately server are on maintenance that why you are not able to login to battle log.
He mentioned it might be as much as 4 hours.