All messages are not changing. No errors in console/logs.

• Where is your messages file located, and what is it called?
• Have you set locale in your config.yml?
  This will force EssentialsX to load a specific language file.
• Have you restarted your server (not just reloaded EssentialsX) since updating your language files?

1. Where is your messages file located, and what is it called? -
   1.1. server files/plugins/EssentialsX
   1.2. messages_en.properties

2. Have you set locale in your config.yml?
   2.1.

# Set the locale for all messages.
# If you don't set this, the default locale of the server will be used.
# For example, to set language to English, set locale to en, to use the file "messages_en.properties".
# Don't forget to remove the # in front of the line.
# For more information, visit http://wiki.ess3.net/wiki/Locale
#locale: en

3. Have you restarted your server (not just reloaded EssentialsX) since updating your language files?
   3.1 Yes.

First my messages worked i changed some colors,words now its not changing.

Can you try copying a fresh locale file to your EssentialsX config folder?

In addition, please post a startup log from your server on Gist.

Sorry, didin't undarstand this part - Can you try copying a fresh locale file to your EssentialsX config folder?

Download a clean copy of the relevant messages file and replace the existing messages file in your EssentialsX folder with the new one.

Still nothing ....
Maybe i need to remove # in #locale: en ?

If you're using English, I would suggest using messages.properties instead of messages_en.properties.

Ok i will try 2 more things if not fixes i will write here

Ok so i replaced my old messages_en.properties with original messages_en.properties.

At line antiBuildBreak=\u00a74You are not permitted to break\u00a7c {0} \u00a74blocks here. i added word TAIP at the end to test if its working. I started my server, joined the server i tried braking some block and it shows me antiBuildBreak=\u00a74You are not permitted to break\u00a7c {0} \u00a74blocks here but not with the word TAIP at the end.... I dont know what to do more...

Please post a startup log from your server on Gist.

Here you go - https://gist.github.com/Wrohi/1bf8d737a37289673aad7a7101f69fdb .

I made very stupid mistakes not even in a code or something. Im really sorry for wasting your time. Good luck in life and thanks for trying to help me !