Toufiq - I provided information in the "hidden content" field in my first reply. This hidden content field contains (I) MY SITE URL, (II) ADMINISTRATOR LOGIN ACCESS TO JOOMLA, (III) FTP ACCESS.
I tested all of the above before sending. I also see that someone has actually used these details to log on to my site since that time... I assume it was one of your team.
If the information is not what you require, please let me know the exact difficulties you are encountering.
I think this is THE most frustrating "technical support" conversation I have had in 15+ years of using Joomla.