LibreOffice Conference Call for Location will expire in 12 days, on July
31, 2016. You can find all the relevant details on the blog post:
https://blog.documentfoundation.org/wp-admin/post.php?post=4137&action=edit.
Dear M. Vignoli,
it seems that the link you have shared is only usable for blog admins.
I'm interesting by the "call for location", could you repost another link ?
Best regards.