@LittleMadi Have you gotten this sorted yet?  I have an off site controller and the portal only works at the site that host the controller

  @LittleMadi 

Got any solution for this? I am also facing the same issue. Even though I was added the particular URLs in the pre authentication list, the controller won't allow them to access those sites without authentication.

Find the screenshots for reference.

  @Its_me_mano Having same issue. I had to add a simple password to let clients use wifi but that's not ideal.

  @itsfer 

It could be pain if they shared the password to others. 

"@Its_me_mano Yes! Definitely not the way I want it to work, but I have no choice for now. Can't find any solution anywhere.

  @itsfer 

To address this, I developed my own solution. Since WiFi signals are accessible within a specific range, I created a poster placed in few places displaying Hotspot plan details along with a QR code for making payments.

I also built a web app to manage payment processing.

Once a payment is made, the system verifies the details, determines the appropriate voucher based on the amount paid, and sends the voucher code to the user via SMS.