Server won't allow anyone entry after a world has been uploaded.

So me and my comrade were doing our thing on the server, converting a stronghold.

I tried to use worldedit, the server couldn't take it. So, i downloaded the world, did my work in singleplayer, and reuploaded it.

Now, when we launch the server, it will launch up fine, no problem there, like usual, but when we try to join, it gets stuck in "Encrypting..."

untl the server closes, or we hit cancel. And when we hit cancel, the game crashes.

In the attached file is some useful information.

*The world was a server-generated one before i removed it and replaced it to work on.

*If i generate a new world, the server will comply, but this won't do, we need our world back.

Thanks in advance.

A bump because we still haven't found anything

Is it an us problem? An Aternos problem? Is it because of what we're running?

No change, issue persists