We will be taking our PS4 game servers offline Monday 5/21 starting at 9:00 AM CDT while we make back end server updates in prep for our Region Merge at the end of May. Maintenance is expected to end at 3:00 PM CDT. During this time, players will be unable to log-in. Get up-to-date info as maintenance progresses in this thread or on our GreyBoxCS twitter feed.
See this start-time in your local timezone here.