MAGES announced the service end of the Hyper Galaxy Fleet Infinity and this time this going to be a final end, not a long time maintenance. MAGES going to turns off the servers on August 31, 2017 at 23:59 (local Japan time) and from today you can’t buy new “Star Chip” sets too. (this was the in-game currency).
If you still have some Star Chips you can use them in the game or you can ask a refund. For the refund please visit the official website for more details: http://choginga.net/info_170801.html