You must enter your Smart'GLIDe(GIVAV) national number or your e-mail then your password.
Your Smart'GLIDe(GIVAV) national number is allocated by your club.
If you do not have a password or you have it forgot, click on the 'Forgot your password' link.
Trick: You could enter directly your national number if the url (mobile.givav.fr?no_national=xxxxxx)
you can find other information on the WIKI