How to trigger a no-returning in-game button?

Context: Recently, I've started to use Remote Spies and DarkDex. Then, I'm trying to make a simple script for personal use to learn.

The problem is: I don't understand why some stuff I click in the game, like a "YES" button when ask if I want to skip the wave, return something to the Remote Spy that I can just copy and use but some other buttons, like a "REPLAY" button when ask if I want to replay the map when I complete it, no matter how many times I click it doesn't return. I tried to at least search for the REPLAY button itself in DarkDex but I guess I'm kinda blind.

So:

1. Why the first button returns something but the second one doesn't have a return at all in Remote Spy and how do I get its function?

2. Is there a way to see only images files when using DarkDex or have a specific word searched in every LocalScript/ModuleScripts? (I'm using KRNL)

My last option would be just simulate a click in the button location.

Game:

https://www.roblox.com/games/4996049426/UPD-All-Star-Tower-Defense#!/game-instances