Recently I have taken a single player save from the Roaming minecraft folder and zipped it. And then when I try to use it in Aternos it just generates a random world. I have tried going to certain coordinates on the world, but that does not work and I have tried using zip archive instead of zip. I have also tried to use the folder option for uploading the world to no avail. But, what really stumped me was when I used a random map that I pulled off of 9minecraft it worked completely fine. I have looked through threads and have garnered no solutions. So if someone could take a look at the files and tell me if there is something wrong, that would be great!
The version of the world: 1.12.2
Size of the world: 16 MB
World File: https://bit.ly/3hSBNc1
Version of Server: Vanilla 1.12.2