As usual, more details required.
Often, this issue is related to your network setup - firewalls, VPN, filter configuration anywhere in your network
Sometimes, this issue is related to general networking or load problems on the Amazon AWS server that is hosting your specific authentication server.
Sometimes, on console, the issue is related to general problems on the specific console network.
Occasionally, but regularly, the issue is related to a scheduled downtime on the FD server.
Rarely, the issue is related to an unscheduled downtime on the FD server (in which case, you will find several related threads within minutes on the general Dangerous Discussion subforum).