Translate bwpostman to Spanish!!!

Hi Romana, I'm testing the extension to see if it meets my needs, I decided to translate the extension into my native language, which is Spanish (es-ES), my query is as follows...
, I want to translate all the texts of the BwPostman plugin, I have to go to each language file folder (language) in each sub-folder (com_bwpostman, mod_bwpostman), duplicate the English language folder for example (en-GB) duplicate it to Spanish (en-GB -> es-ES) and translate the (2) language .ini files
.sys.ini .Texts enclosed in quotes ( "abcd" ).
I also have to add to the file com_bwpostman/bwpostman.xml and add in the document

<languages ​​folder="site/language">
<language tag="es-ES">es-ES/es-ES.com_bwpostman.ini</language>
</languages>

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<languages ​​folder="admin/language">
<language tag="es-ES">es-ES/es-ES.com_bwpostman.ini</language>
<language tag="es-ES">es-ES/es-ES.com_bwpostman.sys.ini</language>
</languages>

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I was guided by this documentation to translate the extension
solojoomla.com/how-to-translate-joomla-e...ns-in-your-language/

After all this, what should I do, because I have not seen changes in the back-end of my JOOMLA 4
I wait answer
Thank you!!!

Hello Romana, I didn't see it, I translated it, there were more than 2000 lines of code, between the com_bwpostman and mod_bwpostman folders and the bwpostman.xml file, I already created the account and I'm waiting for an invitation in transferix, I also have the manual translated into Spanish but It should be improved, some words overlap (use a web translator), the panel changed but I noticed that the image of the menu icon disappeared (see photo) and many translations are missing in the state and maintenance of bwpostman. If you enable me in transferix between today and tomorrow I can finish translating almost 100%.
I greet you sincerely....