If the activation condition is “Confirm Key,” “Event Touch,” or “Player Touch,” first check if “Place Half-Step Up” is turned on for the event. If it is on, try turning it off. If the “Default Character Move” in Basic Game Settings is set to 1 Tile (1×1 Hitbox),you are unable to activate events a half-step above.
Otherwise, it is very likely some activation condition or variable condition is not met,or you have made a mistake in the ordering of the pages. Higher number pages have priority for activation. If Page 1 and Page 3 both meettheir conditions, Page 3 will be the one that executes.