Hi  @flyinghobbit 

Thanks for posting here.

We don't have a EAP model EAP635, but EAP653, are you using this model?

To better understand the situation, please give us the following info:

1. A screenshot of your controller's Device page, which will help us identify the specific hardware and firmware versions of the SDN devices you are using.

2. The type of controller(hardware or software) you are using and its firmware version;

3. A screenshot of the WLAN network page, so we could see the basic WLAN settings.

I connect to the wifi, seems fine - browsing pages...., then a few moments later the captive portal page comes up - a blank page (captive.apple.com)

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4. Around how long of the few moments is? 2-3minutes? or several seconds?

5. During this moment, can you get Internet access?

6. Will this happens on all of your wireless clients?

Please also create a new test SSID, not configure poratl authentication, and see if the same thing happen. Thanks.

  @flyinghobbit 

Great to hear that the issue has been resolved! If you encounter any further problems or have additional questions, feel free to reach out. We're here to help! 😊