We raised some buffs without cooldowns up to 600 seconds to make their timers all align. MW seems to have been incorrectly included in that and lowered by mistake instead of raised

Thanks chubby, you're right — when buffs were stretched to 10 minutes, Maple Warrior got skipped because its top level already runs 15 minutes, so your Lv10 Maple Warrior kept its old 300 seconds. Fixed: every Maple Warrior, for every class, now lasts at least 10 minutes at any level; levels 21-30, which already lasted longer, keep their longer time. Refresh the game and recast it — the buff icon should count down from 600.

Correction to my earlier reply, chubby: a flat 10 minutes at every level would make the extra skill points pointless, so Maple Warrior now grows with its level instead. It lasts 10 minutes at Lv1 and 10 seconds longer for every level after that (11.5 minutes at Lv10, about 13 at Lv20), up to its usual 15 minutes at Lv30, so every point you put in still counts.