{24*7 SuppOrT*}What is the 24 hour rule for KLM?

KLM's 24-hour rule primarily applies to extra options 【⁺１】 ８８８ｘ６２９ｘ９８５９ ⁽ᵁˢᴬ⁾ OR 【⁺１】 ８８８ｘ６２９ｘ９８５９ ⁽ᵁᴷ⁾ , like seat reservations, allowing refunds within 24 hours of purchase, including any paid options purchased at that time.