I am having trouble with users uptime limit. First my setup:
1. I setup a hotspot without using radius manager.
2. Created a user profile "Guests" with "Shared User" none for any number of users.
3. Assigned uptime limit for registered user 30 min.
4. Added a schedular to schedule the uptime limit on per day basis.

Everything worked fine until now. Today a new user registered and logged in (using customised login page) and it is logged out just 1 min after the login. Ideally it should be logged out after 30 min. This happened with two users. For others it worked well. All users are getting access through the same user "Guests". It looks like uptime limit get expired before its specified limit.
What could be the reason for this behavior?

Feel free to ask any other details if needed.