Mobs not spawning

mobs are not spawning in the end in my end farm also I cant even spawn them using spawn eggs pls check my server Ranveer_murder1991.aternos.me

They arent spawning in the end dimension

Also difficulty is hard tried reloading backup restarted.

Yep its true

and there spawning everywhere but not the end

Paper bukkit

1.16.5

i cant it has mine and my friends ip's

also like there is 1 endermite in the end nothing else I cant even use spawn egg like nothing happens!

https://mclo.gs/DrF1fhD

It doesn't spawns like it shows summoned new enderman but its not there

Nope its on hard

Ty!