Hi Aternos Team, can you please add the following plugin?
This is the only one working in 1.13+ in order to keep chunk loaded.
Plugin name: KeepChunks
Plugin link: https://www.spigotmc.org/resources/keepchunks.23307/
Description: KeepChunks allows you to select chunks to keep them loaded in the Minecraft server memory, even when there are no players around. This can be useful for large redstone circuits, minecart railroads, commandblock systems and even for reducing teleport lag.
Thank you in advance !