Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.
hi aternos team !
I wanted give a suggestion!
i suggest be able to edit configs with modpacks
example : The Pixelmon Modpack has an error where you can't use mega or moves i have to edit the config to fix it.
thank you for your time!
And have a good day ! 
i suggest be able to edit configs with modpacks
That's unfortunately not possible due how modpacks installation works on Aternos.
If there is a bug then the modpack author should fix it and release a new version.
Okay Thanks for the reply ! have a nice day
