Minecraft server not loading, says I am 'Disconnected'

Hello. Some of my friends introduced me to aternos a earlier this year, and it was really good. Recently, I created a server with another friend of mine and it was running perfectly fine for a few days. However, yesterday (and today) I can't log onto my server. The world starts to load, then I get kicked saying 'Disconnected'. The console error messages are as follows:

[22:23:22] [Server thread/INFO]: JJ_007 joined the game

[22:23:25] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 4006ms or 80 ticks behind

[22:23:53] [Server thread/INFO]: JJ_007 lost connection: Disconnected

[22:23:53] [Server thread/INFO]: JJ_007 left the game

I would appreciate any help, as over those couple of days, we have progressed massively.

Many thanks

Any ideas on how to find them?

https://mclo.gs/fvN76g9

There you go

I'm just assuming that I have to speed up my internet, right?

Nope, the world is a vanilla survival, with no mods or plugins.

The only thing that I could think of is that I recently built a mob farm off of a dungeon. Although it really isn't effecient.

How am I supposed to fix it then? If I can't even get onto the server...

The same thing happened to me when I made another account. The new account had nothing in the world, it was freshly generated

I don't know how, but it works now! Thanks for all the help