Today (June 25th 2017) we discovered an issue with the US East server which required an extended maintenance cycle. Whilst the server is now back online some players may experience a loss of progress if they played in the 4 hours prior to maintenance starting.
Note that this only applies to characters on US East and that you shouldn't lose your character inventory, schematics or knowledge points but may lose ship modifications that occurred during this 4 hour time frame. You may also find your character and ship reset to an earlier state.
We apologise for the inconvenience.