What time does Pre-paid time run out?

[Raeletta]

i was curious about this myself and hung around online when my sub ran out, i'd say i was online 2-3 hours over my subtime before i got bored and went to bed
it didnt give me any notifications that my sub had expired or any threat to boot my buns out but sure enough after logging out i couldn't log back in
im in no way saying there isnt a limit though i'd say just refresh your sub on your last day every month but if you forget you probably dont have to worry about being randomly ejected from a dungeon in progress either

Don't recall where, but I have heard of people evaporating mid-run because their sub died.