Problem with the number of slides

Your email is contact@joomlack.fr?

yes you can use that one

I have sent you the login datas

I have answered by email but I should have answered here
I have checked and I don't see what could be wrong
do you have a cache enabled ? can you please disable and clear it ?

I continue to investigate

I have checked and found that the problem is related to your template
tested with another template and it works, and there is nothing in my code that could explain the problem else than an external buffer that modifies the output of the module (= the template)