Why button under LAYER doesnt work with conditional trigger.

Napat,

The trigger to change the state of "ReportOK" to Normal runs "When the timeline starts on this slide." That trigger runs the first time the user visits the slide, when the conditions wouldn't be met. That trigger would also run if the user leaves the slide and returns to it. But it's not going to run again when the user remains on the slide to complete the interaction.

The solution? Change that trigger so the "When" is State, and set it to require that state of all the buttons to be Visited.