On the official forums, Cryptic announced that it will be closing STO Gateway tomorrow: “Captains, the Star Trek Online Gateway system will be shutting down on April 13th. While some members of the community enjoyed it, the system never garnered enough interest to warrant further support. There are no plans for a similar feature at this time, and we apologize for any inconvenience its removal may cause.”
The Star Trek Online Gateway was a web portal that allowed players to remotely log into their accounts to view character and ship stats, accolades, fleet holdings, and other information. It never emerged from beta after being launched at the end of 2012.