Hi, Thanks for your reply.
After the user get the redirect from the AP, I can't control where he goes or where he validated the email inmediatle, so I don't know how to re send the info of the base_grant_url, continue_url and so on.
I mean, after the redirect, we lost track of the user. There are to sepparate process, One for the login where the captive portal send an email to be validated, but the user is allowed to navigate for ten minutes. And the other is the validation process itself, when the user navigate to the mail page and proceed to validate a link, and there is when I need to change the Frequency.