like in title i have a problem, i do read your topic's with all that explaining things, but i really dont know what i'm doing wrong, can you help me?, let me explain my problem

I do set some groups in permissionEX like

groups:
  Gracz:
    options:
      default: true
      prefix: '&8[&eGracz&8]&7'
      permissions:
      - modifyworld.*
      - essentials.msg
      - essentials.tpa
      - essentials.tpaccept
      - essentials.tpdeny
      - essentials.afk
      - essentials.auto.afk
      - essentials.helpop
      - essentials.kit
      - essentials.kits.tools
      - essentials.warp
      - essentials.spawn
      - essentials.warp.list
      - essentials.help
      - essentials.sethome
      - essentials.home

this is example of my 1 group, i added my friend by command /pex group Gracz user add MyFreindName and what is displaying on my screen when he writes

[default] MyFriendName : dwadawd12d

If your server.properties file has online-mode=false, PermissionsEx will never work on your server, as I mentioned in #2906 .

Show me your complete server log, on Pastebin, from the moment the server starts until text stops printing to the console and you see a message similar to "Done!".

server.properties file, line 37: online-mode=false

This is why PEX does not work on your server.

You must use online-mode=true.

Here you go

• server.properties
  https://pastebin.com/Ua9HLuDp
• permissionex
  https://pastebin.com/WFK8SqwX
• essentials
  https://pastebin.com/Q6NKzUNh

i have already done that, but still nothing is working

Hello can i get a respond ??

no

jk actually your issue is that the permissions section for your groups is indented to be under options -- unindent the permissions sections by 4 spaces (so that the permissions: line lines up with the options: line).