No mobs are spawning

Quote

Downgraded Spigot 1.18.1 to 3425

Mob spawning in Spigot 1.18.1 should work again now
-Kurt( Aternos team member)

Yesterday spigot downgraded due to the mob spawning issue. Can you check now and see if you face the same issue? If you still face the same issue then keep a backup of your server and switch to paper

You already have the latest version.

Quote from Powerful845tiger

Yesterday spigot downgraded due to the mob spawning issue. Can you check now and see if you face the same issue? If you still face the same issue then keep a backup of your server and switch to paper

Just do this

So you installed paper and it still didn't work?

Maybe it's an issue related to the plugins you use. Can you share a screenshot of the plugins you use

Quote from gps_imperator

I’m using no mods just spigot or paper like I said

He's not asking you if you use mods, he's asking you to screenshot your plugins folder if you have any plugins installed.