Hello Paul,
I just joined the forum myself today.
I did some research on the progress of captive portals and walled gardens over the last few weeks. I have been periodically looking into progress on the matter over the last few years.
I found notes and posts on the web stating that the principal palyer or players in www.cillispot.org stopped support and development and that this www.chillispot.info site copied some of the info from the original site to attempt to keep the project alive.
I ma not sure who is behind chillispot and this site or whether they are active. I do note that the posts on this site are dated (old). An indication to me that things are not very active.
I hope you get an answer and clarifications. In the meantime and until you get another suggestion I suggest you take a look at www.coova.org its another site I came across that appears to be based on and/or a continuation of chillispot