How do i enable chunk loading on flux point ?

I hate that I have spent the last 2 hours of my life looking for answers to that very question. Im playing atm7tts in singleplayer and i even found the config folder and changed the enable chunk loading to true and it still wont allow me to chunk load.... its been almost 3 years since this was opened and im the first person commenting really??? this is like low key insane why cant anyone give a simple solution or answer like maybe the mod dev hasnt implemented the support for that feature in 1.18.2 yet but hey acknowledgement of the issue would be helpful or is there another config somewhere that i cant find that also needs to be updated

I play on ATM7: To The Sky and i cant click on the chunk loading button.
In the serveur config file : enable chunk loading = true.
I dont understand... please help me.

Just dealt with the same issue and found the solution thanks to some helpful folks and figured I'd pass it along here as well after confirming it on my own server:
The config file located at [serverdirectory]/config is copied into the world folder when it is generated, so the one you're editing is likely only going to take effect on a new fresh world.
The correct config file to edit for existing worlds is located at [serverdirectory]/world/serverconfig folder.

You just need to use FTB chunk, press M to open the map then click at the chunk you want to claim after that shift+click to force load the chunk