Time goes by and my problem remains unsolved.
As I said in my first mail if you take care and read it carefully the crawler run correctly
It end with a success message but sometimes it crawl 0 URLs sometimes 5, 10 and so on so I’m very confused with it.
The cache option from JOOMLA is not activated.
As I also said before we decide to buy this component to help us to generate SEF URL in a REAL ESTATE WEBSITE and what we can’t do is to manually track hundreds of pages of propertys ads.
I would beg you urgent help otherwise we may have to return the product for not meeting our expectations.

First of all thank you for your response but your answer does not help me at all.
If you take care and read my message carefully I explain you the trouble I have when I use your component.
We decided to buy the component for the excellent comments we read on the Web but I’m a little confused with the use of your component and I think that it doesn’t work like you said.
I’ll try to explain once more my trouble with your component.
The website is an Estate Agent and we are using the EstateAgent component from Estate Agent Improved v. 1.5.8
When I decide to delete all the SEF and METATAG URL I can't generate anyone again.
I purge all SEF URL And CLEAR CACHE from maintenance menu.
After that I go to the Crawl option and try to generate some URL and there is where I got the trouble and I Can’t understand why.
Sometimes your component generates some URL other times nothing. I try various level of crawl option 1,5,10 but nothing.
I log out from JOOMLA then log in again and sometimes I have some new URL generated when I go to the SER URL and I’m afraid but I think this is not a normal way to work. I can’t lose 4 hours to generate 3 SEF URL.
If you want to see it I can send you in a private message an access to the website and you can try it and you’ll see what I’m talking about.
Thank you for your time.

I decided to delete all my SEF and METATAG url and now i can't generate anyone again.
Before trying to generate again I purge all SEF URL and CLEAR CACHE from maintenance menu I log out from JOOMLA and login again.
After that i go to the Crawl Website option and try to generate I try various level of crawl option 1,5,10 but nothing.
I get no SEF URL at all.
I'm working with ESTATE AGENT component. I have installed the ESTATE AGENT extension too.
Would appreciate your help.

I set a cron job but I do not think it works right.
Below is the configuration:
# ARTIO JoomSEF cron tasks file
# This script will be run: once a day, midnight
# Tasks that will be run:
# Update URLs
0 0 * * * wget -q "inmoagil.net/index.php?option=com_sef&am...dda2a0b0890038" -O /dev/null
In the domain control panel I created a cron job but the sitemap file is not updated.
Can you help me or tell me where I am doing something wrong.
Thanks.