They technically are actually online 24/7, due to what I know from last being staff ;) There was an update with slack where staff are able to see if theres a modreq on, which is what should be made by a player if any trouble is occurring in any chat. Gotta screenshot, then make the modreq, and staff within slack will see the modreq and will either try to get on or get someone else to get on. Its what I did most of my time when I couldn't get on, needed to get that modreq count up :D
Of course, they're not literally online but they are watching, so ye