Prefixes do not show up I have a lot of players on the server and this problem must be solved immediately
Spigot 1.8.8

I have PermissionsEx-1.23.4
I have EssentialsX 1.8
I have Essentials chat 2x
I have Essentials spawn 2x

We need more info. Like is there a errors? What command are you using?

Unfortunately PermissionsEx is currently unmaintained and no further updates are planned. Because of this, all issues are being closed. If you are looking for an actively maintained permissions plugin, take a look at LuckPerms. It is compatible with major server platforms and can import data from PEX.