Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.
Hey,
You always need absolutely the same mods on the server as well as on the client.
It is important to make sure that it is not only the same mod, but also the right version.
Custom Launcher like Prism Launcher makes it easier for you because you can share the configuration with your friends.
I downloaded the launcher but do you mean that I just build my setup there and share it, how do I make a server out of it
Hey,
You always need absolutely the same mods on the server as well as on the client.
It is important to make sure that it is not only the same mod, but also the right version.
Custom Launcher like Prism Launcher makes it easier for you because you can share the configuration with your friends.
So I have to download the mods one by one?
Hi, I'm wondering how Me and my freinds can join my modded server, do we just have to install the forge version and join the server or do we have to download the mods ourselves, because that seems like a ton of work. I can't seem to download the mods folder (if that even is a thing I can do). Please help me understand this issue. 
