Since the lodestone list dousnt update in real time the list isnt always correct in what it says. So for instance say the server you want opens. But if it opens before that lodestone list updates(the list updates every 5hrs) the lodestone list will say its closed while its atuly open. Thats why the lodestone list isnt very useful unless your looking at it right after it updates(with in like 30mins of it updating). Its best to look up the "inactive" times for the server, were there is less players on at a given time.