Maintenance for the week of October 7:
• PC/Mac: No maintenance – October 7
• Xbox: EU megaserver for maintenance – October 9, 2:00 UTC (October 8, 10:00PM EDT) - 16:00 UTC (12:00PM EDT)
If you've not done so, please try the troubleshooting mentioned here. Please open a ticket with customer support if you've already exhausted the troubleshooting.