People don't really know what they're doing when they do that, even a confirmation won't stop them. We still receive reports of "why my settings don't save when I reinstall" or "why my server was deleted when I downgraded/changed software", yes, even with the big confirmation screen they seem to ignore it, so a confirmation is not really an option.
Aternos is mostly used by really young people, an "advanced" button would just seem "cool" from them and not stop them from actually changing really risky options.
Maybe you can add a reset button and advanced button.