[Spawnpoint does not work]

i have Essentials spawn installed but the server does not recognize /setspawn command

im making a boxmine pvp server but people spawn under the bedrock box and instantly leave nobody want's to play

[slimefun4 lucky blocks]

i mean that i don't think the plugin even is there.

[NPCs on my server keep despawning]

this probably isn't the way you're looking for but have you tried using nametags to prevent despawn that at least would be a temporary fix untill someone gives you a better way

[slimefun4 lucky blocks]

i added the slimefun4 lucky block plugin trough the plugins panel. but there are no lucky blocks in the server i restarted the server and tried again still nothing am i doing something wrong?